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Computer repair, troubleshooting or upgrades pros in Walnut

First and foremost, we're a mobile company so we can provide our expertise to where you need it most. We understand that electronics can be frustrating (especially when you don't know who to call) when they don't work the way they should. Let us take the burden off of your shoulders! While providing peace of mind, we will curate tailored solutions for you. If you have a problem, we can solve it.
"Matt was super helpful and knowledgeble. He made it easy to fix the issue and was really friendly. Great experience!? I would definitely recommend him to my family and friends!"
Silvana R on June 2025
First and foremost, we're a mobile company so we can provide our expertise to where you need it most. We understand that electronics can be frustrating (especially when you don't know who to call) when they don't work the way they should. Let us take the burden off of your shoulders! While providing peace of mind, we will curate tailored solutions for you. If you have a problem, we can solve it.
"Matt was super helpful and knowledgeble. He made it easy to fix the issue and was really friendly. Great experience!? I would definitely recommend him to my family and friends!"
Silvana R on June 2025

Established in 1983, Dolphin Systems provides Managed Services, integrated network, data communications consulting to the small and medium business market. Our goal is to provide the highest level of expertise, professionalism and service. Maintaining strategic relationships with key industry leaders such as Hewlett Packard, Intel Corporation, Bitdefender, SonicWall assures that your business will benefit from current best practices, emerging products and technologies. A partial list of services offered includes: * Systems design, planning and implementation * Complete Network and Security Assessment. * Local, Metropolitan and Wide Area Networks * Problem determination and resolution * Long-term support and maintenance * 24-hour availability * Complete wireless services. * Sports Video/Motion Analysis solutions * Audio Visual installation and troubleshooting * Satellite troubleshooting and remediation * Integrated Smart Home including voice control
"N/A"
Matt F on April 2022
Established in 1983, Dolphin Systems provides Managed Services, integrated network, data communications consulting to the small and medium business market. Our goal is to provide the highest level of expertise, professionalism and service. Maintaining strategic relationships with key industry leaders such as Hewlett Packard, Intel Corporation, Bitdefender, SonicWall assures that your business will benefit from current best practices, emerging products and technologies. A partial list of services offered includes: * Systems design, planning and implementation * Complete Network and Security Assessment. * Local, Metropolitan and Wide Area Networks * Problem determination and resolution * Long-term support and maintenance * 24-hour availability * Complete wireless services. * Sports Video/Motion Analysis solutions * Audio Visual installation and troubleshooting * Satellite troubleshooting and remediation * Integrated Smart Home including voice control
"N/A"
Matt F on April 2022
We pride our company on reliability, integrity and quality work. We are one of the oldest Computer / Home Theater / Home Automation companies in all of Southern California (started in 1985). When LT Associates, Inc., is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. Whether you need Computer Support, TV installation/mounts, home theater/surround sound, or home automation, LT Associates, Inc., is the company to call. We look forward to earning your business! Thank you!
"Larry was knowledgeable, courteous, and fast in repairing my broken SSD. My PC was fixed and running fine on the same day."
Wolf H on October 2023
We pride our company on reliability, integrity and quality work. We are one of the oldest Computer / Home Theater / Home Automation companies in all of Southern California (started in 1985). When LT Associates, Inc., is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. Whether you need Computer Support, TV installation/mounts, home theater/surround sound, or home automation, LT Associates, Inc., is the company to call. We look forward to earning your business! Thank you!
"Larry was knowledgeable, courteous, and fast in repairing my broken SSD. My PC was fixed and running fine on the same day."
Wolf H on October 2023
With over 10 years of experience in the IT industry, we are the experts you need to take care of your home or business. We handle everything, from computer troubleshooting, to repairs. We will treat your home as we would treat our own. Give Safe Skies, a call today. We look forward to working with you!
"My computer needed to many parts to repair. He tried to fix the hard drive but then found out it needed a motherboard. I had to buy a new computer, but he took the new hard drive out and did not charge me. I kind of felt like he should have known I needed the motherboard before he purchased the hard drive but I don't know anything about computer so I'm not sure. It was sure nice that he was willing to drive out here and pick up my computer and drop it off. That saved me a lot of time"
Kathy L on May 2020
With over 10 years of experience in the IT industry, we are the experts you need to take care of your home or business. We handle everything, from computer troubleshooting, to repairs. We will treat your home as we would treat our own. Give Safe Skies, a call today. We look forward to working with you!
"My computer needed to many parts to repair. He tried to fix the hard drive but then found out it needed a motherboard. I had to buy a new computer, but he took the new hard drive out and did not charge me. I kind of felt like he should have known I needed the motherboard before he purchased the hard drive but I don't know anything about computer so I'm not sure. It was sure nice that he was willing to drive out here and pick up my computer and drop it off. That saved me a lot of time"
Kathy L on May 2020

With years of experience in the computer industry, we are the experts you need to take care of your home or business. We handle everything from installs, repairs to upgrades. We cover all technologies from networking, printing, security to all system services. Give Full-Moon Group Consulting a call today, we look forward to working with you!
"Mr. Luna spent time explaining things to me, answering questions that I had and in general, doing a fine job!"
Margot K on February 2020
With years of experience in the computer industry, we are the experts you need to take care of your home or business. We handle everything from installs, repairs to upgrades. We cover all technologies from networking, printing, security to all system services. Give Full-Moon Group Consulting a call today, we look forward to working with you!
"Mr. Luna spent time explaining things to me, answering questions that I had and in general, doing a fine job!"
Margot K on February 2020

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Mr. Harman was exceptionally knowledgeable about computers and installed our new one with ease. He was able to rescue our information and vast amount if pictures quickly. He put me at ease with his kind, friendly and professional attitude. He took the time our job needed and checked that everything was working well. He answered all of our questions and was happy to explain anything that would help us. For all the work he did his price was very fair and he assured us if we had any questions we could contact him. We are happy to give him 5 stars because he deserves them . We recommend him without reservation for all your computer needs!"
Charles A on February 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Mr. Harman was exceptionally knowledgeable about computers and installed our new one with ease. He was able to rescue our information and vast amount if pictures quickly. He put me at ease with his kind, friendly and professional attitude. He took the time our job needed and checked that everything was working well. He answered all of our questions and was happy to explain anything that would help us. For all the work he did his price was very fair and he assured us if we had any questions we could contact him. We are happy to give him 5 stars because he deserves them . We recommend him without reservation for all your computer needs!"
Charles A on February 2025

Friendly IT Pros offers expert, in-person tech support for homes and small businesses across the Los Angeles metro. Whether you're looking to set up a new computer, fix Wi-Fi issues, recover data, or protect your systems from cybersecurity threats, our experienced team brings reliable service and a human-first approach. For homeowners, we provide help with everything from streaming and smart home setups to digital organization and training. For business clients, we offer proactive IT solutions, network upgrades, security audits, and ongoing tech support to keep your operations running smoothly. No confusing jargon—just fast, dependable service from local professionals you can trust. Same or next-day appointments available with no surprise fees. Let’s get your tech working the way it should.
Friendly IT Pros offers expert, in-person tech support for homes and small businesses across the Los Angeles metro. Whether you're looking to set up a new computer, fix Wi-Fi issues, recover data, or protect your systems from cybersecurity threats, our experienced team brings reliable service and a human-first approach. For homeowners, we provide help with everything from streaming and smart home setups to digital organization and training. For business clients, we offer proactive IT solutions, network upgrades, security audits, and ongoing tech support to keep your operations running smoothly. No confusing jargon—just fast, dependable service from local professionals you can trust. Same or next-day appointments available with no surprise fees. Let’s get your tech working the way it should.

In Southern California for over 3 Decades , We are among the most recognized and trusted companies in the area. Licensed / Bonded / Insured. Striving to be a courteous , reliable and experienced group of Integration Technicians. We have built systems in AZ , GA , NB , AL , and NV. Many restaurant chains have relied on our services since we opened. Call Jack for a Quote today. 714 366 6344.
"Vinny was very professional and efficient. I would recommend him."
Brenda C on May 2025
In Southern California for over 3 Decades , We are among the most recognized and trusted companies in the area. Licensed / Bonded / Insured. Striving to be a courteous , reliable and experienced group of Integration Technicians. We have built systems in AZ , GA , NB , AL , and NV. Many restaurant chains have relied on our services since we opened. Call Jack for a Quote today. 714 366 6344.
"Vinny was very professional and efficient. I would recommend him."
Brenda C on May 2025

Specializing in custom home audio/video, network, automation ( lights/curtain/FULL Home Automation ) sales, service, installation from simplest TV installation to elaborate custom home theater systems
"Truly a fantastic job!!"
Andrew S on July 2024
Specializing in custom home audio/video, network, automation ( lights/curtain/FULL Home Automation ) sales, service, installation from simplest TV installation to elaborate custom home theater systems
"Truly a fantastic job!!"
Andrew S on July 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Everything was beautifully done. I couldn't be happier! I have recommended Ozzie to several friends. He is reliable, honest, trustworthy and responsible. I'd hire him again!! Thank you Ozzie... see you soon about the all-wood 5 shelf book case!!"
Judith B on February 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"Everything was beautifully done. I couldn't be happier! I have recommended Ozzie to several friends. He is reliable, honest, trustworthy and responsible. I'd hire him again!! Thank you Ozzie... see you soon about the all-wood 5 shelf book case!!"
Judith B on February 2025




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