System freezes randomly

Windows 10 system freezes randomly about once per day. I usually either hold the power button down, or force restart using restart button. Can't move mouse, image is frozen on the display. PC continues to spin but the drive activity LED doesn't blink at all after a freeze.

Recently bought a used 840 Evo, after which the freezing started, but Windows DiskCheck finds no problem, neither does Samsung Magician or Crystaldiskinfo. I also updated the 840's firmware as it was old.

PSU is an old, cheap Advance 650W, could this be the problem?

Or could a fresh install fix it? I cloned my old 64gb SSD with the W10 install on it to the "new" 840, so it's not a fresh install.

Specs:
FX6350 4.0ghz
GA-970-UD3P
Palit 760 4gb
840 evo 120gb, WD blue 1tb
Advance 650W
HyperX 1x8gb 1600mhz
 
Solution
first fix attempt would be to update the bios and motherboard drivers from the motherboard vendors website. (focus on the motherboard sound driver as a root cause)
I would also do a complete reinstall of the GPU driver (including its gpu sound driver) from the GPU vendors website.

after the updates, you might go into windows control panel device manager and disable any sound source that does not have a speaker connected to it. if your monitor does not get sound via the GPU video cable sound support you can disable the GPU sound driver.

Note; you reinstall the GPU driver since Microsoft has been updating the GPU video driver base, and it can conflict with the other parts of the video driver if your machine never got rebooted at...


The check in command prompt showed nothing wrong, and CPU temps peak 60C after 15min AIDA64, GPU about 78C. Noticed a very light "screeching" noise when starting the stress test, is it normal?
Will do a cleanup inside the case and reconnect cables, as well as check the BIOS in a minute.
Edit: ACHI is on.
 


I had a lot of problems with VRM overheating resulting in CPU throttling on my previous Biostar mATX board, with a 4+1 phase, but when i upgraded to this Gigabyte board with 8+2, the PC ran fine. It's just wierd that the freezing started after i changed the SSD..
 
first fix attempt would be to update the bios and motherboard drivers from the motherboard vendors website. (focus on the motherboard sound driver as a root cause)
I would also do a complete reinstall of the GPU driver (including its gpu sound driver) from the GPU vendors website.

after the updates, you might go into windows control panel device manager and disable any sound source that does not have a speaker connected to it. if your monitor does not get sound via the GPU video cable sound support you can disable the GPU sound driver.

Note; you reinstall the GPU driver since Microsoft has been updating the GPU video driver base, and it can conflict with the other parts of the video driver if your machine never got rebooted at the correct time.

check to see if you got any bugcheck memory dumps in c:\windows\minidump directory
if you do, you can copy them to a cloud server like Microsoft onedrive, share the files for public access and post a link. I can take a quick look at the windows diagnostic dump with a windows debugger and see why it shutdown. If you did not get a memory dump you can google "how to force a memory dump from the keyboard" make the registry changes and then force a memory dump. boot the system then while it is working, force a memory dump. then later if the system hangs, try to force a memory dump. often on a gpu hang the memory dump process will still work, it is the GPU that is not updating the screen but windows does not know it.

 
Solution