Windows 8.1 crashing with a error screen

L-man108

Reputable
Feb 26, 2015
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4,510
So I bought myself a relatively good pc but the people that put it together accidently installed Windows 8.1 in a 32 bit but I wanted it in a 64 bit. I played around with my pc until i got my 64 bit upgrade and there was no problem so far. After I installed Windows 64 bit my Windows would either randomly crash or it crashes when I copy over via USB/LAN or install via Virtual disc or through my CD-ROM. I have reinstalled Windows but no effect I took my pc in and they couldn't fix it and even replaced my hard drive and motherboard and still i have problems. The only thing is that this never happened on my pc when i was on 32 bit so does anyone have an answer for me? XD
Specs:
Intel i3 4th gen
Geforce gtx 750 ti
4G x2 RAM
Gigabyte Z97-D3H
And also a windows 8.1 64 bit which used to be 32 bit