2 days ago i had an issue when trying to boot up, The PSU/CPU/Case fans would all crank up for about 1 second then die off, then roughly 2 seconds later the pc would power up again for a few seconds, then a 1 second long beep would be spat out.
Firstly i fixed the issue by re-seating my GPU and RAM in different slots and it worked for about 2 boot ups.
It started happening again yesterday, I woke up, turned my pc on and it was fine, when i went to lunch i turned it off and after eating i came back, tried to boot up and got the weird boot up with beep again.
I tried re-seating my ram and gpu multiple times and i still got the same problem.
I did a test on my psu to see if it was okay and it was fine.
I took out my 5850 and put an old 8600gts in my case and booted up, it started like it was before with the delayed fans and cut off, then reboot but instead of the long beep i just got the normal beep and my pc booted fine.
I'm not sure what to do at this point, I'm not keen to buy another GPU seeing as i have only had my current one for under 2 years. Is there anything i can do or more tests i can try?
I've read on forums that people say it could be the MOBO short circuiting the case, Or the PSU failing but i think i ruled those out by getting successful boot ups using a different gpu.
I've added a video of what happens that you may like to view.
6 Gigs Corsair Dominator 1600Mhz
Win7 Ult 64bit
Radeon HD 5850 1GB
antec 650W psu
i7 950 3.07GHz