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It is the motherboard, system doesn't crash with any of the RAM sticks as long as they are in slot 1 and 3

It's either two of my RAM sticks or two slots on the motherboard. I reckon the second option is more likely. Running two dimms on 2 and 4 slots works. Adding another dimm on slot 1 and system crashes Adding a different dimm on slot 1 system crashes. Same thing for slot 3..

No, I've removed all overclocks and disabled XMP. Now running with only two RAMs in it haven't crashed for almost 6 hours now. Now I just need to figure out which DIMM is faulty or if both of them are.

Don't want to celebrate early, but had no crash yesterday for over 4 hours with only one 8GB RAM stick in! I'm adding more and now I just need to wait and see.

Just experienced the same freeze running Ubuntu.

Doing that now, will post an update. Just to be sure I've unplugged all existing drives and installing Ubuntu on a small SSD to test it.

I have replaced the PSU for the EVGA SuperNOVA 650 G1+. The system still keeps crashing. @Theburninbeaver @NelizMastr Now it can either be some weird Windows bug in the latest update, doubt it as I've reinstalled Windows.. but since it reinstalled to the same update version.. who knows.. I've seen a question at ten forums from 20th of June, someone with the same update has his computer freezing periodically. Or it can be a motherboard or the cpu. I'm really sick and tired of taking the computer apart now ?? https://www.tenforums.com/performance-maintenance/135153-just-upgraded-18362-its-freezing-periodically.html

I have updated my bios to 20190403, but it still kept feezing. I've removed two RAM sticks (I bought these about two months ago) and tried to run it at 16GB RAM and it still keeps crashing. I have replaced the GPU for GTX 1080 and it still keeps crashing. I've ordered a power supply from Amazon so I will test that tonight. (EVGA SuperNOVA 650 G1+, 80 Plus Gold 650W)

Just checked their site and there is a new bios update, will do it once I get home from work. Do you think it could be related? I haven't installed any new hardware or anything that would cause the freezing recently? Will test and get back. Thanks!

Over the last 2-3 weeks my computer have been freezing randomly, sometimes during a game and sometimes just while watching YouTube. I have not installed any new drivers or devices when it started happening and it still baffles me. I'm unable to replicate the crash and it's just random. Windows 10 Pro 64bit latest update. It's difficult for me to figure out what it is as I'm unable to replicate this...  Hardware - https://www.userbenchmark.com/UserRun/18685688 PSU - https://www.amazon.co.uk/gp/product/B00FNCAPJQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Motherboard - MSI Z370 Pro Carbon Things I have tried so far - in order Removed drives one by one and tested running just on the M.2 drive Reverted all overlocks (CPU and GPU) Disabled XMP Reseted BIOS to factory settings Ran Malwarebytes and Defender scans Updated all drivers Formatted all drives Once I went through that I've proceeded to Reinstall Windows 10 Pro Tested the system with GTX 1080 instead of GTX 1070, still the same issue Removed GPU and tried connecting a different power supply running on the integrated graphics card. There was a crash but not exactly the same as the freeze, the screen went all pixelated and wierd. I switched the system off. Done memory diagnostics (no errors) Temps I managed to see one time it froze (Couldn't take a screenshot obviously) Event Viewer doesn't show anything interesting besides Critical (System has rebooted). Here is a video, it doesn't always make this noise, it's coming out of the speakers as I was watching a video.  Would appreciate any help, I'm a bit desperate. Thank you!