I can't tell you how many times David has rescued my computers over the years, and for very reasonable amounts. He is just the best.

Scammer. Used to bring my electronics here for several years, and all of a sudden the last laptop I brought to this place - I come back to pick it up and he tells me he returned it some company that called him and asked him to return this computer. None of this makes any sense. No notice of any kind, he did not call me to tell me this, no receipt or proof of anything! Just stole my laptop and lied about it. If you do bring anything to this place, ask for a receipt or some type of proof of drop off. read more

TLDR: the guy called David who owns this shop is a scammer. He is really unprofessional , incompetent and lacking in knowledge of computer. Don't expect him can fix your laptop! My laptop wouldn't turn on after I cleaned the dust and replaced the thermal paste. I took it to David, and he said he needed some time to check it. After a day, he called me in the evening and told me that the motherboard needed to be replaced. He claimed it was burnt and said the reason was that no electricity was detected when he tested it. I brought the laptop back home and tried to fix it myself. In the end, I successfully turned it on, and the problem was not related to the motherboard at all. When I asked him what exactly he had checked, he couldn't explain anything useful and instead blamed me for not giving him the charger with the laptop, saying that this was why he failed to detect the issue(make sense???) I was charged $85 and got no useful diagnosis. He even wanted to charge me more to replace the entire motherboard. I feel scammed. I seriously doubt whether he really knows how to repair laptops. He seemed to lack technical knowledge and behaved very arrogantly when I questioned him. Worst experience ever. He is a SCAMMER. read more

Called and scheduled an appointment. All I wanted to do was purchase a PCIe cable to connect my new GPU to my rig's power supply, I wasn't seeking any advice, just a product. Guy tells me it's impossible that my GPU has 3 ports, saying "no GPU made has 3 ports" while I'm showing him a picture of the GPU that clearly has a 6pin and two 8pin slots. Guy called me "boy" and acted like I was stupid for even suggesting that the part I was trying to purchase from him would work. Instead of looking up the specs of the GPU after I provided the model information to clear up his confusion, he took the 30 seconds it would have taken to do that to go on and on about how the picture I took was bad (weird?) Overnighted the cord from Amazon, plugged it into my power supply and GPU, sure enough, it worked exactly as I was explaining to him it would. I've never met a business owner more passionate about proving his customer wrong than he is making a sale. I grew up on Taraval and have always seen this shop, it's a mystery to me how he's been in business this long with an attitude like that. Glad I went the Amazon route though, he probably would have charged me more for the part than what I ended up spending (I would have paid whatever he charges, would have loved to support a local business) Go to this shop if you want someone to question your intelligence and be argumentative + condescending. read more

Customer service skills. Not friendly, I will not return as I feel my business is not valued.

David is amazing. I brought my computer to him because I was not able to find the photos that the Apple genius bar had supposedly loaded from my backup harddrive. I am completely unskilled with computers but David was able to explain in a way I could understand. It took him many hours and a clever workaround but he was able to restore my photos. Even though it took many more hours than originally projected, he charged only for the original hours quoted ! David is extremely knowledeable, professional, excellent communicator and honest. read more

Cosmic Computer on Taraval saved my aged Lenovo lap top and ALL the data in it! I cannot emphisize enough the outstanding professional job and outcome he provided me there at Cosmic! I heavily endorse his work! Ed Reidy read more

Great repair. Knowledgeable tech owner . Money saving help . My old circa 2014 Apple MacBook Air finally broke down for the first time in 10 years . It would not charge at all. For a little over $100 bucks and a bout one week turnaround time I got a new battery and some burnt out wiring replaced and repaired my laptop to better than new performance. For the type of use I give it this is more than enough for me and my needs . Thank you again Cosmic Computer. read more

I have an old (late 2013) Macbook Pro that was in very bad shape -- battery swollen, the hinge of the lid/screen twisted, broken, and disconnected. I understand that replacing the battery on that particular model is very tricky, since the glue has to be removed with heat, with the possibility of even starting a fire. But he did it! And he completely rebuilt the lid/screen hinge. He turned a mess into a completely functioning computer! He seems to be someone who not only really knows computers, but really loves working on difficult problems. And the price was definitely lower than I expected. read more

David is a fantastic technician. I had swapped out some RAM on my gaming PC (that I had built myself 8 years ago) upgrading from 8GB to 32GB and afterwards was not able to boot up Windows (even after swapping back in the old RAM and messing around in BIOS). David founds a multitude of issues with my build which included: (1) The CPU Fan was not configured to the correct input on the Motherboard - I wasn't cooling the CPU as efficiently (2) the CPU fan itself had a broken lock so it was a bit loose, and (3) I had managed to corrupt my BIOS which is why Windows wasn't starting up. Once we got to chatting after he fixed those issues, he had also went ahead and plugged in the additional 8 GB of my old RAM, something I didn't realize I can do adding up my total RAM now to 40 GB. He took the time to explain to me in laymen's terms how the RAM works and why I might as well use it rather than let it lay around in my closet. 100% recommend for computer repairs or general upgrades to your build. read more

I went in to the store with my laptop, and I asked for a diagnosis. I got it in 2 days. The asus motherboard is expensive, so I decided to skip on repairs. Very professional, I might say. THANKS A TON! read more

David was amazing! He figured out my laptop crashed due to it's inability to accept the latest Windows 11 upgrade. He saved me many hours of frustration in re-building my data. Fantastic person and business! read more

My guy really took care of me. Got my new to me Apple MacBook Pro all updated with the most current os. He gave me lots of tips and tricks on how to use my laptop more efficiently. The price was very fair. read more

Cosmic Computer - MacBook Pro running Monterey. Works great - Computers Near Me - San Francisco, California

This guy is a scammer. I grew up in the Sunset and passed by this place many times, so it was the first place I thought of when I wanted to get my MacBook fixed. I regret trying to support a small Asian-owned business instead of paying up to Apple at Stonestown. I brought my older (2017) MacBook Pro in because the screen stopped working. I was hoping that it was some loose connection but he confirmed that the entire screen needed to be replaced. He quoted me $400something which seemed reasonable, so I left it with him. When I came to pick it up, the new screen turned on but the resolution was way off, so I assumed he may not have tuned the resolution settings correctly. At home I tested various resolution settings and they ranged from awful to tolerable. I was desperate enough to finally have a laptop back after weeks without one, so I continued to use the replacement screen for a few weeks, until my spouse took a look and asked why the resolution was so off. I told him that I changed the settings and chose the best I could find, and he told me that the replacement screen was of poor/knockoff quality. We went back to the shop to tell the man what happened and he said "Well, no one sells genuine MacBook parts." I told him that he should've informed me prior to the repair if he was going to use an inferior quality part so I could've gone to the actual Apple store instead. He then said that since it hasn't been a full month yet, he could still try to refund the part with the place he purchased it from and get a new one since "they sent [him] the cheap one this time". Since I'd already paid him, I let him do that. A few days before the promised completion date, he calls to tell me that the part he ordered was also crappy and that he'd try ordering from somewhere else. Finally I got my laptop back after weeks with a screen that looks to be OEM. I think he lied the first time that they don't sell genuine parts and sold me the shit quality knockoff and tried to make a profit off of it. If we hadn't confronted him, I'd still be stuck using a low quality part. Funny thing is a few years back my mom brought her coffee-spilled MacBook in for a fix. He never got back to her and she gave up. I guess he probably parted it out. read more

This guy is really dishonest be careful I went to fix my internet and I just threw away $85 and came home and it wasn't working I called to inquire about the internet problem, just like before, and they told me to call the internet company and fix it. They are total scammers. read more

My computer wasn't working. so I went to see David. He took a quick look and he thinks it was a monitor cable issue. He didn't charge me at all. It turned it out the HDMI cables had loosed connection. Now my computer is back in business. I highly recommend Cosmic Computer. read more

I was looking for a computer repair shop because the back cover of my Dell laptop cracked. Apparently there is a class action lawsuit regarding the back cover and hinge on the Dell laptops. I got a recommendation from people in the neighborhood to go to Cosmic Computer (aka Cosmo Computer). I saw a lot of great reviews and so I reached out to David. David was great! He told me what I need to get so he can fix it for me. I was a bit impatient after dropping off my laptop due to needing it for work. David was extremely nice, professional, super knowledgeable about computers and got the laptop fix in one day. The pricing was extremely reasonable and again I cannot stress on how nice David was throughout the repair. I plan on going back to David to get some enhancement done on my laptop. Thanks David. read more

David is patient, kind, honest and understanding -- he really wants to help solve your problem. In these days when so many businesses are all about the money, he is most definitely not. He cares -- that is so rare and precious. I was panicked -- I had no idea what was going on with my laptop, I need it for medical work that I do and which has deadlines. I asked for an appointment, and David gave me one in 15 minutes! Brought my laptop, keyboard and mouse. In a few short hours, he ran all the diagnostics, knew what was wrong almost the instant I brought it all in, was able to obtain a new keyboard/mouse set for me in a couple of hours (!!!) and I was able to work that same afternoon. His services are so affordable (I was between paychecks, so another reason to panic, LOL), but that was nothing to worry about. And he explained everything to me -- patiently, until my anti-tech brain finally "got it," lol. And another great quality: A sense of humor and interest in life & travel (may not seem important when you're panicked about your computer, but it calms the anxiety down and that's huge, at least to me, when dealing with technology issues. Thank you so much, David -- definitely my "go to" guy. PS, best of all, my laptop likes and respects you a lot ..... TK San Francisco read more

Walking into Cosmic Computer felt like sensory overload, boxes of spare parts were stacked high and pretty much everywhere. However, you'll find that David is very knowledgeable and fair with his assessments. We came to Cosmic Computer after my brother's first self-built rig abruptly stopped working. After taking apart the rig and imparting some additional knowledge to my brother, David was able to identify an issue with the motherboard. He very frankly advised my brother to replace the part and to replace it with a new part (don't cut corners). He was also very objective when giving this advice. He started with asking my brother what he used his computer for. He then made multiple suggestions from the lowest price point (~$50) to the highest point (~$200) but favored neither end. His candid conversation and honest assessment was really a breath of fresh air. At this point, David literally left it up to my brother as to whether or not he wanted to have him order and fix his computer and run diagnostics. My brother is a tinkerer and at this time declined so we gathered all the parts and we left with David's troubleshooting free of charge. read more

Cosmic Computer - Computers Near Me - San Francisco, California

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Fixed dead PC same day and only charged one hour of labor. Highly recommended! Very happy with the result.

Professional service and reasonable prices. You will not be disappointed to get your computer fixed there.

Owner was very friendly and helpful! He did his best to understand my needs and budget before working on my computer and called me with updates on the progress. read more

Brought my pc over to David to fix a system crash and to swap out my gpu and psu, everything went smooth and easy picked up my Pc after two days. Highly recommended and fair pricing for this whole inflation crisis that we're in. read more

Cosmic Computer - Computers Near Me - San Francisco, California

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David is amazing. I had to bring my PC, which was super slow, back to life. David was friendly, knowledgeable, and after finding out how soon I needed it, he moved quickly and efficiently to get it done swiftly. He is a great guy! read more

The owner is awesome. My cooling system broke during finals. He fixed it in 2 days with new parts and disassembled my old cooling and kept the fan. Extremely happy with the quality and work done. Would highly recommend to anyone with computer issues read more

Been a long while since I came here. This is where I got my 1st computer built. If I were to encounter any type of problem with my pc, this will still be the place I will go to. read more

I broke my PC computer screen and needed it fixed right away because I was taking a class in a few days. David was able to get the part in and fix it faster than anyone. I have a Dell laptop and apparently they're really particular with the parts. You have to use a Dell certified screen, otherwise he could have fixed it that very same day because he had the right size screen in stock. This is the second time I've broken my laptop screen and this second screen is far superior to the one that was put in last year by someone else. It's super clear and crisp. I highly recommend this computer store. David's really honest and really helpful. During Covid, you'll need to make an appointment, so you're the only one in the store. Totally worth the drive. ps... cash only read more

Where do I even start!! First off - the place is ran by David!! Super cool guy, he's really nice to talk to and more importantly is very helpful! I've done my research on 10+ computer techs in the Bay area and some of them actually refused to fix my laptop for the specific problem. (DC port shorted out, possible motherboard replacement). David was able to pinpoint the trouble from the start as I explained to him throughly my problem!! He didn't give up and as a student I put all my trust and hard efforts inside my laptop (my life) for a shot at fixing it. Turn around time for the size of trouble he faced was quick! (For me it was a week - had to order and solder parts). He charged me a flat rate from the beginning and there were no surprising charges. If you're looking for a computer fix, be sure to call David first. I'll definitely be back for all my PC fixes, thank you David. read more

I rarely need computer repair services and am savvy enough to handle basic trouble shooting and maintenance but recently found myself in a pickle when my computer wouldn't post and display on my monitors. David and Cosmic Computer has been on Taraval for 17+ years, and his transparency and professionalism were a complete delight! He has the tools and experience necessary to diagnose my issue and ultimately saved me LOTS of time and heartache. I HIGHLY recommend anyone with computer issues to give him a ring. Call him for an appointment beforehand! read more

The owner David don't listen to what you say he will typically just tell you what your hardware has done wrong even when I already tell him that my software window has a problem he told me to go home and will call me when everything is done. For the nexts day I received a phone call and told me that he is done I drop by and take a look he told me fix stabilized the motherboard and gpu and charged me for 2 hr labor fee I don't know what to say I'm guess it dose take him to fix that in 2 hr when I can do it in 20 min or less further more the main issues the window problem still haven't fixed yet he say he will charge me another 1hr labor fee to do so, as a result he will charge me for 3rd labor fee for a gpu, motherboard and a window installation for 255＄ 85＄ an hr read more

PLEASE READ I never actually left a review on yelp before but I feel like it's important to tell you guys about my experience with the owner David and the way he runs his business. So my laptop wasn't starting properly and after some research based on locations near me and the positive reviews, I went with this store. After initial discussions with David, we decided to move all of the data from the hard drive on my old laptop to an external hard drive. I left my laptop with David and went on vacation for 2 weeks and came back to drop off the external hard drive that I ordered while on vacation since I didn't have an external hard drive during the first visit. That's 2 trips to the store. He tells me it will take a while to move the data over from the laptop to the external hard drive and that it will be completed the next day. I was a bit disappointed thinking it could be completed that day as most people are not expecting more than 2 visits (one for the drop off and the second to pick up the fixed product). I got a little busy the next day and forgot about picking it up so I didn't get a chance to come back until a week later. So now I'm in the store for the 3rd time. After asking for my name and searching a few minutes for my laptop, he tells me that everything is ready to go but....there are 6 viruses that his firewall picked up from my old data during the transfer to the external hard drive and he's removing them as we speak. I ask him why this wasn't done earlier as he tells me it will take A FEW MORE HOURS so I need to come back later. Needless to say I was pretty upset at this point as this is the 3rd trip for something that should have been handled during the 2nd trip and I still have to come back yet again!?. And why does it take a few hours to delete a few viruses??? Maybe it has to do with the fact this guy didn't even start to work on moving the data from my old laptop to the external hard drive until I walked in and asked to pick up my stuff a whole week later. I'm almost certain that was an excuse he made up on spot because most people are not experts with computers so he thinks he can BS you with some technical excuse since he's the "expert" and you're clueless. So it took me 4 visits to get what I needed that should have been handled in 2 visits. The worst part is when he handed me back my laptop at the end, the screen was CRACKED (picture below) and he pretended like it was already there when it was actually perfectly fine when I dropped it off. That pretty much told me everything I needed to know when it comes to doing business with this guy, he will NOT owe up when he screws something up but instead deflect the blame elsewhere. All in all I would not recommend taking your computer here as it will take a lot longer than you think to get what you need done. Don't be fooled by his initial talkative personality into thinking he will get the job done in a timely manner or really cares about customer satisfaction because once he get possession of your stuff, lord knows when he will tend to it. And if something goes wrong, it's either the computer's problem, or a pre-existing problem, or some other made up technical problem for us non-experts but never because of him even though he's the ONLY person working on your computer. read more

Cosmic Computer - Left side of the screen completely messed up when I got it back from David. - Computers Near Me - San Francisco, California

Had a hard time w/ my computer... tried to fix it myself... made it worse. Asked a friend to help... couldn't help. I finally did some research on Yelp and found Cosmic Computer. I spoke w/ David and was super helpful over the phone. I came in to have look at computer, and he talked to me about what he would do and how long it would take. Sure enough, he DELIVERED! And my computer is working better than ever! David is the real deal! read more

I bought a hand me down 2011 dell computer a few months ago from amazon and David had it working like a 2023 computer , David is awesome , you gotta be super stupid to think other wise read more

David is absolutely amazing! Asked for a same day appt and brought in a my laptop for a keyboard issue. Quick fix along with helpful tips to avoid the same problem in the future. David has great passion about what he is doing and he is obviously fantastic at his job!! Thanks :) read more

Great local service and great attitude. Brought my PC in to replace a power supply a couple months back and he was able to have it done within 2 business days at a reasonable rate. David takes care of so much there and can build PC's for you as well as install a graphics card. If its something you need, chances are he can do it for you. I'll definitely use him again for my PC needs. read more

Story kept changing. Wound up that nothing was done on my computer. If I am told one more time what I heard him say.... Came out with less computer than I went in with. read more

David was very helpful and knowledgeable. My computer wasn't charging. I had dropped my computer a few months ago and thought it might be a problem with the charging port. I brought my computer and charger in. He did some troubleshooting and determined it was a problem with the charger. He refused to take payment and instead told me to pay it forward (put money into someone's meter, help an older person carry their groceries). He was very kind and I truly appreciate it! Please support this small independent local business. read more

It's okay if you don't mind a bunch of guys monitoring your every move on your device (yes this is 100% state and federally illegal) if you don't mind that they're okay. I would urge you to use a more reputable source not one spending more time hiding their spyware on your device then fixing your issue. And yes I have proof and no I cannot share it, not at this time. read more

This review is long over due. I've been bringing my laptops here for over 10 years. A few pc laptops and recently my Mac laptop. I never asked what the guys name is but the guy with glasses.. the only guy there? Lol well he's super honest, nice and I don't think he charges too much for his service. My laptops all work like they are brand new after he fixes them. I highly recommend this place! read more

Great service. They always provide detail on what is wrong with my laptop and there is no charge unless you get work done to fix something on/in your laptop, read more