No display
No signal, failed POST or a black screen after startup.
Custom builds · Prebuilt desktops
Bring a custom or prebuilt gaming desktop to Mashfix Dallas for graphics, cooling, power and stability diagnostics. From Oak Cliff and East Dallas to North Dallas, share the symptoms first so we can plan workshop intake or an appropriate onsite assessment.
A+ certified technicians · Repair approval before work

Diagnose the system
A black screen does not automatically mean a failed GPU. We evaluate the related components before recommending replacements.
No signal, failed POST or a black screen after startup.
Game freezes, blue screens and shutdowns under load.
Loud fans, thermal throttling and cooling-system faults.
Artifacts, driver resets and unstable graphics output.
Intermittent startup, power cycling and supply diagnostics.
Compatibility, installation and stability after a change.
Plan your service · Dallas
The Dallas repair location is on W Illinois Avenue. If you need help at a North Dallas, Preston Hollow, Lake Highlands or downtown address, describe the complete setup before booking. A monitor or connection issue may fit a visit; internal faults often need the bench.
Important files on the PC? Mention them before resets or reinstalls. Review data recovery options.
Repair intake
10 AM–10 PM, 7 days a week
Walk-ins welcome
682-235-7712Another repair-location option
9 AM–8 PM, 7 days a week
Walk-ins welcome
682-274-0166At your home or business
Monitor connections, peripherals, Wi-Fi and setup problems in Dallas may fit a scheduled visit. Internal power, GPU, cooling and motherboard faults usually need workshop testing. Send the service address and equipment details so we can confirm the scope and availability.
Dallas gaming PC repair
Share your parts list or model, symptoms, recent changes and any error lights. Mashfix Dallas is the initial intake choice; you can choose another location in the form.
We’ll follow up with the next step. Do not include passwords or recovery codes.
Have a gaming laptop? →Before your visit
Yes. Send your address, tower and monitor details, and the symptom for a scheduled onsite review. We confirm the visit scope and charges. GPU, power, cooling and board faults may need workshop testing; Irving is another real Mashfix repair-location option.
Mashfix Dallas is an intake option at 4323 W Illinois Ave, Suite 104, Dallas, TX 75211. Call 682-235-7712; posted hours are 10 AM–10 PM, 7 days a week. Walk-ins are welcome. Call first for a heavy tower, custom cooling loop or unusual hardware.
The fault, parts, test time and availability determine the quote and turnaround. Share your build and symptoms first. Mashfix explains the proposed work, price and expected timing before you approve the repair; the request form does not confirm an appointment.