My PC sometimes freezes with a green screen and restarts after about a minute. Other times it shows a black screen and restarts immediately. During the first green-screen freeze, it stayed stuck for more than three minutes, so I had to hold the power button to shut it down. I have since reseated the power and HDMI cables and reinstalled the drivers. The crashes have happened while verifying files, compiling shaders, and running a demanding game that used around 14 GB of VRAM. Is it safe to test the system again, or could another crash damage the hardware?
3 Answers
The green or black screen points toward the graphics card, its driver, overheating, unstable power, or possibly a bad cable, but RAM and the power supply can produce similar symptoms. Use a clean graphics-driver installation, check event logs, watch CPU and GPU temperatures, and avoid stress-testing until the basic checks are complete. If the machine was stable at a shop but fails at home, also verify the wall outlet, power cable, and PSU connections.
A normal software crash or forced shutdown usually won’t physically damage your components, although repeated hard shutdowns can potentially corrupt Windows or files. The main priority is finding the cause rather than avoiding another test. Check temperatures, run a memory test, monitor GPU behavior, and consider the power supply, graphics card, and drivers as possible causes.
It has crashed while verifying files, compiling shaders, and playing a demanding game that used about 14 GB of VRAM.
Usually the direction is reversed: failing or unstable hardware causes the crashes rather than crashes damaging healthy hardware. Random freezes and restarts can be caused by faulty RAM, so test each memory stick individually and run a proper memory diagnostic. Also check that the RAM is seated correctly and temporarily disable any overclock or memory profile.

The shop said the PC tested normally, but after I brought it home it crashed after a while and started stuttering afterward, so I’m not sure whether the problem is the hardware or something about my setup.