Last night, I was playing Far Cry 4 and had been at it a good hour or two when the sound suddenly broke up and stopped; next the PC switched itself off. It tried to reboot, but keep failing in a "stuttering" manner. I stopped the power to the machine, thinking it might be a case of dust blocking up the fans and the machine over-heating. I opened the case and cleaned it out, but whenever I try to start it I'm having a POST failure with the following symptoms:
- The CPU, GPU and PSU fans run constantly
- The motherboard yellow LED is on
- No beeps / case LEDS / display
Now I'm trying to work out what has gone awry - the fans are spinning but nothing else seems to be happening. I've tried the following with these respective results:
- Attempted CMOS battery reset - no change
- Removed RAM - no beeping, no change
My very basic guess is that either the motherboard is fried, the PSU is defective or the graphics card is dead. I am unsure how to proceed - I have limited equipment here. To eliminate the graphics card, can I simply remove this and see if there is a change is POST or do I have to replace it, and is there a relatively painless way to ascertain whether motherboard or PSU or other has died?
Specwise, the graphics card is a Sapphire RADEON HD 6870; motherboard is a Dell Studio XPS from late 2009. Can't recall off-hand PSU, but it's a 600W supply. I'm afraid I'm not great with hardware problems, and only know the absolute basics but would be very grateful if anyone can outline a good way to isolate the cause...