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We want to hear from you.


Phone Number: (925) 516-4054

Click Here to Call

Fax Number: (925) 372-6507

Support Email:

Mailing/Drop Off Address
(via the UPS Store)
1155-C Arnold Drive. #217
Martinez, CA 94553-4108 

 Monday: 9:00am - 5:00pm       
Tuesday: 9:00am - 5:00pm       
Wednesday: 9:00am - 5:00pm       
Thursday: 9:00am - 5:00pm       
Friday: 9:00am - 5:00pm       
Other Hours By Appointment      

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Do you have a problem with your home or business computer? Not sure what to buy or how to install it? Call MA4 Computer Services. We are the computer specialists, so you don’t have to be!


MA4 Computer Services has been in business since 2004. The Martinez-based Company, specializes in computer troubleshooting and repair, hardware and software setup, networking solutions and data protection/recovery.


Our experts at MA4 Computer Services are also keen consultants. We can help you determine exactly what equipment and software you need for your business, deliver it to your home or office, install and configure components, and even help you learn to use them.


We travel throughout the San Francisco Bay Area to provide individuals and businesses with a wide range of computer-related goods and services.


We offer superior service, rapid response and competitive pricing. All work is guaranteed for 30 days and new parts come with a 1-year warranty.


MA4 Computer Services is the one-stop solution for all your computer needs.

We gladly accept



What Our Customers Say

Britt, Project Management, Neighborhood Solutions, Walnut Creek, CA "Your service is exceptional. Prompt return of our phone calls and in many cases being able to get us up and running over the phone is a sign of your exceptional expertise. For us, there is no alternative to your service."

Mary from San Ramon, CA: I've got my computer up and running and for the first time in over a year I can log into my work PC and not have to use my daughter's computer.  YEA!!!!!!  Everything feels so "fresh and new".  This was the BEST $150 I have spent all year.

Linda from Alamo, CA: I can't thank you enough for helping me through this hairball of computer nightmares!  I'm so happy to have found you for LIFE!

Sharon from Pleasant Hill, CA: Matsie was great and explained everything to me in terms I could understand.

Chris Siemens Business Services from Walnut Creek, CA: Fantastic response, great communications, look forward to working again.

Lexi CompUSA, Inc. Fairfield, CA: Tech was very knowledgeable!

Michael World Savings Lafayette, CA: Thanks for the great work!

Kathy from Walnut Creek, CA: Matsie is very professional and personable. He resolved our issues exactly as planned. He has just the right mix of professionalism and friendliness.

Lin from Antioch, CA: I'm so happy to have found you!  THANK YOU soooooo much for everything you helped me with.  I am very impressed with your skill & professionalism. 


 San Francisco East Bay locations we serve:

94507 Alamo, CA
94509 Antioch, CA
94531 Antioch, CA
94511 Bethel Island, CA
94513 Brentwood, CA
94514 Byron, CA
94517 Clayton, CA
94518 Concord, CA
94519 Concord, CA
94520 Concord, CA
94521 Concord, CA
94522 Concord, CA
94524 Concord, CA
94527 Concord, CA
94529 Concord, CA
94506 Danville, CA
94526 Danville, CA
94528 Diablo, CA
94568 Dublin, CA
94549 Lafayette, CA
94550 Livermore, CA
94551 Livermore, CA
94553 Martinez, CA
94556 Moraga, CA
94570 Moraga, CA
94575 Moraga, CA
94561 Oakley, CA
94563 Orinda, CA
94565 Pittsburg, CA
94523 Pleasant Hill, CA
94566 Pleasanton, CA
94588 Pleasanton, CA
94582 San Ramon, CA
94583 San Ramon, CA
94595 Walnut Creek, CA
94596 Walnut Creek, CA
94597 Walnut Creek, CA
94598 Walnut Creek, CA

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