PC Failing To Boot / Crashing After New GPU Install (GTX 970 GAMING)

dayhzz

Reputable
Jan 12, 2016
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So about a week or two ago i ordered a MSI GTX 970 Gaming graphics card to put in my PC, the rest of my components are:

- i5 4690k (stock speeds)
- MSI PC MATE Z97 Motherboard
- 600W EVGA 80+ PSU
- 1 x 1tb seagate harddrive
- 1 x 8gb ddr3 ram
Also an aftermarkert cpu cooler

Anyway, so my pc ran fine for months without a single issue but the first boot after the new graphics card wouldnt boot properly, after some looking around i realised I had to uninstall my old drivers (it was using intergrated graphics before not gpu) i changed all the drivers and it all seemed ok, a few days later it failed to boot again, i assumed it was a problem somewhere else and not the GPU, after some fidiling around with the parts and trying different ram slots and checking connections ext it started to work again. A few more days passed and it failed to boot again, I did the same as before just trying different ram slots and stuff but nothing worked. I reset my CMOS and did some more unplugging and plugging in cables and it booted, not long after booting (about 10 minutes) it crashed and refused to boot again. I once again did more unplugging and plugging in and it worked, it lasted for two days with 12+ hour intensive gaming sessions with no problems but the day after after around 10 minutes of being on the display on my monitors (2) went however the pc remained on. I tried to reboot and all the fans / lights ext started except the led around the power button and there was no display on my monitors.

I am starting to think my PSU is bad, i doubt its underpowered as 600w should be more than enough.

Does anyone have any ideas? Thanks in advance
 


At witch part of the boot process does it fail? Does in pass POST?