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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon46
    Verified computer repairs reviews

Top-Rated Computer repair technicians in Diamond Bar - Updated Nov 2026

Avatar for Mike's Computer Repair
Mike's Computer Repair
4.8(
870
)
Computer Repair, Troubleshooting or UpgradesComputer Repair, Troubleshooting or Upgrades - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1994

Free estimates

Warranties offered

"I have used Mike's Computer Repair for several years now, and have always been extremely satisfied. Mike is very trustworthy so I never have to worry about turning over "control" of my computer to him. I have called on Mike numerous times when I mess up something on the computer and he quickly takes care of my mistakes and doesn't act like I'm an idiot. I highly recommend using Mike."
Response time12 hrs
Response rate100%
Recommended by90%of homeowners
Avatar for SOS GEEK TV & Computer Repair
SOS GEEK TV & Computer Repair
4.8(
106
)
Computer Repair, Troubleshooting or Upgrades

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"My Geek-tech technician fixed a number of issues I was having with my computers, some of which I didn't even know I had. He also made some adjustments to make it easier for me to use my laptops. A big thank you to Albert Johnson for his help!"
Response time7 hrs
Response rate100%
57 neighbors recently requested a quote
Avatar for Full-Moon Group Consulting- Unlicensed Contractor
Full-Moon Group Consulting- Unlicensed Contractor
5.0(
13
)
Computer Repair, Troubleshooting or UpgradesComputer Repair, Troubleshooting or Upgrades - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"I had a laptop which I spent two months struggling over until I found Anthony from Full-Moon Group Consulting. He assured me that he was going to be completely thorough with my laptop, and I was not disappointed. I am very happy with his service, and he is a very genuine and an honest person. Definitely coming back here for all of my computer needs. I highly recommend his service."
Response time40 mins
Response rate89%
Recommended by100%of homeowners
Avatar for Diversified Telecommunications
Diversified Telecommunications
4.3(
262
)
Computer Network or Wiring - Install or RepairComputer Network or Wiring - Install or Repair - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"Hired Jose to install. And program a RF/IR remote control. He programmed 4 pc. Of equipment. All if my equipment are working as planned. This remote control is better than Best Buy's for less money and installation was less than Best Buy Tony S."
Network data cabling
Network data cabling
Network data cabling
Network data cabling
Network data cabling

+3

Response time1 day
Response rate100%
45 neighbors recently requested a quote
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Computer Repair FAQs, answered by experts

Repairs take 2-6 hours, but extensive frame replacements may extend the timeline.

Fabric tears, faded material, broken frames, and malfunctioning retractable mechanisms often need professional attention.

Installing new hardware components, software updates, and system cleaning.

Regular updates, cybersecurity measures, and hardware inspections prevent major issues.

Monitor performance, update hardware, and schedule regular professional inspections to ensure optimal operation.

The Diamond Bar, CA homeowners’ guide to computer repairs

From average costs to expert advice, get all the answers you need to get your job done.