DSzymborski :
The specifications of your PC and the actual things you tried -- as oppose to "everything" -- would be extremely helpful. As it is, there's absolutely no information to go on here.
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Motherboard: Asus Sabertooth Z170 S (Revision 1.xx)
BIOS: from 1902 to 3401 (Updated yesterday, is the latest)
O.S.: Windows 10 Pro x64 Build 1607
CPU: i5-6600K 3.5GHz Skylake
HDD: WD Blue 1TB (WDCWD10EZEX-08WN4A0)
Socket: 1151 LGA
GPU: GDDR5 Gigabyte GTX1060 6GB G1 Gaming
RAM: Corsair Vengeance LPX DDR4 2133MHz 4GB x2
PSU: EVGA SuperNova B2 850W (110-B2-0850-V1)
I did:
1. Driver Verifier (Windows and ASUS)
2. Prime95 (All Tests)
3. Unigine and 3DMark
4. Sleep and Turn-Off = Never
5. Update all driver to the latest
6. Fast Start-Up: Disable
7. Turn Off HDD: Never
8. sfc /scannow
9. PCI Express: Off (Power Options)
10. sfc /scanfile=c:\windows\system32\On every available file system
11. Memtestx86 for 5 passes
12. wmic diskdrive get status (SMART)
13. chkdsk C: /f
14. msconfig
15. RAM and HDD check (Windows feature)
16. Disable O.C.
17. AIDA64 stress test to all component
18. Dusk hardware removal
19. Format about 4 times
20. Set BIOS to default
21. Reinstall of INF and IME (Downloaded from Intel)
The PC is new.
Regards