Hello there, BC.
I've posted this before elsewhere but after further diagnostics, I'm none-the-wiser about what is going on and how to troubleshoot further. This is a problem that has plagued me for about a fortnight now and things aren't improving at all.
A few days ago I started getting crashes (audio loss, cursor no longer moving, no keyboard presses did anything) followed by Windows kinda resuming, but operating slower and almost glitchier. The taskbar would only work on and off, other times I couldn't click anything on there. I have firefox open nearly all the time and this issue has only happened when it has been open. It is fully updated. What happens next is, after the big freeze, firefox is covered in a checkerboard glitch (pic 1: http://i.imgur.com/Dvs9o4j.jpg) + (pic 2: http://i.imgur.com/Qja6MKC.jpg) Also, I use Chrome at the same time with no glitches or major issues there unlike in my firefox browser, nor in any other programs.
After this, my pc seems to continue freezing up to the point where I have to manually turn it off at the front. Minimising firefox gets rid of the visual glitch on my screen, when I reopen firefox some of the glitch remains. When I scroll, it adds to the glitch. If the PC does this weird crash and firefox is minimised, there will be no checkerboard until I open up firefox from my taskbar again and even still, sometimes it won't even result in the checkerboard. Also when the performance is this slow, the taskbar stops responding almost completely, sometimes it'll work though. Typing things gives a super delayed input, too. Minimised programs won't seem to re-open, or if they do, they just do not respond. Turning my PC off on the front restores functionality immediately upon reboot until the next time it crashes, usually 3+ hours. I've also noticed that sometimes when it's "close" to crashing, video streams will not load immediately, like Youtube showing the "something went wrong" error message, if left for a few seconds it loads as per usual and the message is gone. When doing file searches or when I tried to do a virus scan I noticed the computer REALLY slow down during the search, instead of zooming through hundreds of files a second, it got to the point where it struggled getting through 1KB .log files from my backup software etc.
Steps I've taken to diagnose:
1. I've changed my PSU (my old one had gotten noisy, so I was actually going to replace this anyway)
2. I've pulled each of my 2 sticks of RAM and let the computer run on each of them separately.
3. I've removed my video card and tried a different one (a EVGA 560ti)
4. I've checked everything is in good order visually inside my case.
5. I've ran CPU stress tests via prime95.
6. I've ran GPU stress tests.
7. I've checked the event viewer but I've seen nothing jump out as unusual, especially in the System category.
8. I've tried different and clean installing graphics drivers.
9. Firefox has been uninstalled (crashing/slowing down still occurs) and updated.
10. Chkdsk has been ran on my drives.
11. Made a note of my temps upon the time I've crashed: http://puu.sh/nEosH/5066cb08ed.png
MOBO: Asus P8Z77-V LX ATX LGA1155
CPU: Intel i5 3570K (not OC)
GPU: MSI 770 4GB (and also tested a EVGA 560ti)
GPU Driver: 364.51
RAM: Corsair Vengeance 1600 8GB (2x4GB)
PSU: Corsair Builder Series CXM 750W Modular 80 PLUS
SSD: Samsung 830 256GB
HHD: WD Black 2TB
OS: Windows 10 64bit
I really would like to fix this for once and all, so if you require further details from me, please ask; I'm lost here, I really am.
Thank you for all you do, if this isn't quite the right forum, if you could move it, that'd be appreciated, thank you for your time and expertise.
Edited by Ashy123, 15 March 2016 - 12:26 AM.