Latitude E5470, freezes constantly

hi,

I am trying for over a week now to fix a dell latitude E5470 that keeps freezing up at random moments.

Shipped September 9, 2016, warranty expired September 1 2019.

It always freezes within windows, or towards the end of loading windows. This is after a fresh install. As time goes by it freezes earlier and earlier.

If I go into the BIOS or boot into a live CD there is no freezing happening.

I've replaced the SSD, the RAM, the wifi card. I've tried a clean install of windows without doing any updates or updating any drivers. It worked for a few hours, than froze. Tried to slowly install one driver after the other, doing a reboot after each install. It eventually started freezing no matter what I did. 

When windows was functioning I had realtemp running and at the time of freezing the temp was 57c so it's not an overheating issue I think.

Any advise would be appreciated,

Thanks