The ol' GPU fan spinning once problem.

Hello

I bought a new GPU about 2 months ago, all well etc.

Then I noticed that when playing high-intensity games my computer shut off and I couldn't start the computer up for like 30 minutes. I made the anacdotal decision to conclude that the PSU was giving out, as the PSU is over 5 years old.

So I replaced the PSU and tried to boot up the computer. Now the the GPU fan only spins once after boot, no image on monitor, and then stops spinning, and it looks like it tries to restart again.

I'm using a 750w power supply when my old one was 700w so I doubt power is the issue. All for the psu are plugged in nice and snug, and the CPU fan is spinning nicely.

I've tried plugging in different power cords, no success thus far with that.

I'm waiting to see if I could goto a friends house to try their computer out with my gfx card, but I'm not sure if this is a gfx problem, I'm starting to consider its the motherboard, which is also 5 years old (mobo is only part left in pc that was there originally)

Thanks for reading! This has been frustrating.