About to lose my mind with PC errors
Windows 10 Pro x64
16GB DDR3 1600mhz...sometimes 8, sometimes 4
240GB Adata SSD
120GB Intel SSD
GTX 770 2Gb
750 watt Corsair PSU
My PC is having some very strange issues and I am not sure what the exact problem is. A couple months back I noticed that the mouse would sometimes lag and or audio drop while doing basic tasks. I started getting back into gaming with FFXIV and noticed right away that it would refuse to run in DX11 mode without constantly crashing within minutes or flat out refusing to start. I switched it to DX9 mode and it ran longer without issues, but crashed all the same. So I tried other games and all had the same issues. I reinstalled drivers, even wiped my pc clean yesterday and reinstalled windows 10; thinking that perhaps it was a windows issue.
But the problem remains, very hard crashes(black screens, frozen screens with audio, frozen screens without audio) but through these past two months, I have NEVER had a single bluescreen. I have checked each and every time after these crashes or slowdowns in the even viewer and found zero anomalies or errors reported by windows. I even took my computer apart yesterday, cleaned each and every single component, applied new thermal paste, new bios battery, everything. And the problem persists, to top it off; windows/bios are saying I have 8GB of memory, when I have 16 installed. I tested the memory using memtest overnight and all sticks passed with no issues either. I'm about to lose my mind.
I removed memory sticks, removed the Nvidia GPU and used the onboard graphics, reinstalled every driver known to man, reinstalled a clean copy of windows, gutted the pc and cleaned everything, applied new paste, checked the PSU, EVERYTHING. Even just being on the desktop, I get lag. The graphical errors, audio/video slow-down happen when using the cpu's integrated graphics or the GTX 770. I did change sata ports as well last night when I reinstalled windows. I gota message about intel thunderbolt resource management and again when I reset just now. Can anyone help me please?
Edit: I should add that in my initial testing of the pc WITH the GPU, full-screen applications and especially games would crash like crazy and not even run properly at all. I tested the GPU with furmark and it would let me run at 1920x1080 fullscreen, but nothing else. Yet I could it to 8k and beyond, windowed and the GPU would say it was putting out 100's of frames...at over 8k...on a GTX 770 2GB.