Magnum Computers Custom Built Computers in Mission Viejo, CA

Rated Excellent
Rated Excellent from 6 reviews
Magnum Computers is based in Mission Viejo and locally owned, we have been in business since2003 solving computer problems for home users, small and medium sized companies, and laptop users on the go. We are a full-service technology services business. We repair, fix and maintain a wide variety of computer and computer systems including: Dell, Compaq, Acer, Gateway, HP, Sony, Toshiba, Apple, IBM, Lenovo and many other computer brands, custom build computers, servers, workstations and related hardware as well as peripherals.

Our team of qualified techs are on standby to setup your wireless network, setup a new computer, transfer or recover data, troubleshoot software errors, or remove a Virus/Spyware/Malware Infection. Call us today so we can quickly diagnose the issue and provide a solution to get your computers performing at their best.
  • Computer Repair & Maintenance
  • Data Backup & Recovery
  • Hardware Installation
  • Laptop Repair
  • Network Support & Administration
  • New System Setup
  • Operating System Support
  • Printer Repair
  • Virus & Spyware Removal
Contact Information
Phone Number (949) 525-2489
City Mission Viejo, CA
Zip Code 92691
Address 24000 Alicia Pkwy Ste 17-350
Key People
John
John
Oscar
Oscar
Reviews and Testimonials
Rated Excellent (5 of 5) from 6 reviews
  Testimonial by Greg N.
John is simply the best …. ever! My computer caught a bad virus. I called the Geek Squad at Best Buy because that’s where I bought my computer. They said that whether I brought my computer into the store, or they came out, it would take a week. It always takes a week with them. Don’t know why they don’t hire more people.Called John at Magnum and he was at my house within an hour. I had read instructions on how to clean up the virus, but didn’t trust myself to do it right. John had everything he needed to get clean up the virus completely, and he found some other ones in the process. I thought that my anti-virus program, Trend Micro, was supposed to catch these things, but it didn’t. John spent an hour and a half running the clean up programs and rechecking everything. It was money well spent. He lives in Laguna Hills.
  Testimonial by Jennifer M.
Amazing! I have a home based business where I keep all my customer data on my main PC when it crashed. I called Magnum Computers and a tech guy came out 40min later. He said I had a bad hard drive and took the PC to the shop where he recovered all my data and even my programs! (good thing because I don’t have all my CD’s anymore). They installed a new hard drive and had my PC back to me later that day! I can’t thank them enough.
  Testimonial by Nancy P.
John is the BEST ever. He is knowledgeable, professional and provides fast service.

We decided to get more speed out of our computer and John stopped by the very day I called at exactly the time he said he would be there. He took our computer with him and had it back the next day. John also took the time to optimize Windows and check for Malware. When he brought the machine back he again arrived exactly when he said he would and took time to make some more recommendations. John's price was very fair and exactly what he quoted it would be.

We won't trust anyone else with our computers again. Thank you, John. It was a real pleasure dealing with you.
  Great Work
by Gary Schank from Coto de Caza
Oct 06, 2019
John has helped me with several computers, from recovering full data from computers that died, to upgrading laptops, to recommending hardware. Honest, great work at a reasonable rate. HIGHLY RECOMMENDED.
I recommend this business
Great personal service at a fair price.
  You won't be disappointed
by Jim W. from Laguna Hills, CA
Dec 03, 2012
What a pleasure to deal with someone who is professional, dependable, very knowledgeable and honest - If you need any computer help, John is the guy to call.
  John is simply the best .... ever!
by Greg N. from Mission Viejo, CA
Dec 26, 2011
My computer caught a bad virus. I called the Geek Squad at Best Buy because that's where I bought my computer. They said that whether I brought my computer into the store, or they came out, it would take a week. It always takes a week with them. Don't know why they don't hire more people.

Called John at Magnum and he was at my house within an hour. I had read instructions on how to clean up the virus, but didn't trust myself to do it right. John had everything he needed to get clean up the virus completely, and he found some other ones in the process. I thought that my anti-virus program, Trend Micro, was supposed to catch these things, but it didn't.

John spent an hour and a half running the clean up programs and rechecking everything. It was money well spent. He lives in Laguna Hills.
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