Aging System needs Troubleshooting

[krusherkid]

Hey all, 

 

About 5 years ago I built my first system. Over the past few years I've experienced an issue where the system will just lock up. No BSOD, no error, no explanation. This has survived multiple installations of Windows 10 Pro. I know its getting to be about time for a new system, but I just don't use it enough to justify an upgrade right now. When the system hangs in Windows, it shows the last screen you left it on for hours until you find it frozen. Num, Caps, and Scroll locks do nothing. I tried running the "Windows Memory Diagnostic" last night set for 15 passes and this morning when I got up it was only on the first pass at 18%. I can still interact with the diagnostic tool with ESC, Tab, F1, and F10 however the test will not continue and each time it changes screens it prints the text line by line instead of the entire screen at once. The motherboard is showing a code 99. Any suggestions or direction would be greatly appreciated. 

 

Specs are

MB ASUS|Z97-DELUXE/USB 3.1 RTL

 

PSU SEASONIC| M12II 620 BRONZE RT CPU INTEL|CORE I7 4790K 4.0G 8M R MEM 8Gx2|GSKILL F3-1600C9D-16GXM R   GPU EVGA|GTX 960 SSC GAMING   SSD CRUCIAL|NVMe PCIe 1TB SSD   COOLER CORSAIR|HYDRO H100I

[krusherkid]

11 minutes ago, BlueScope819 said:

Try memtest86, bad RAM. Reset RAM to base speed instead of XMP?

Running now. Thanks. Ram is set to default values.

[krusherkid]

4 hours ago, BlueScope819 said:

Try memtest86, bad RAM. Reset RAM to base speed instead of XMP?

Memtest finished 4 passes with no errors. Beginning to think it may be a driver issue. But with no errors and having reinstalled windows several times at this point, how would I even begin to chase something like that down? Its sort of a sparatic issue. sometimes it will happen several times a day and then go weeks or even months without issue. I'm trying to set this up as a Plex box but in the past week I've had the thing lock up  quite a bit, rendering Plex unaccessible. I'd slap linux on it if I could find a way to auto mount my my NAS drives but I've not had luck with that at all.

[krusherkid]

1 minute ago, BlueScope819 said:

You can try resetting BIOS to defaults but I'm not so sure after that

I've tried that as well. At Least I'm not the only one who's stumped.  

[krusherkid]

1 minute ago, BlueScope819 said:

Storage is fully working?

As far as I can tell. The M.2 is only 2 years old. Maybe 100 GB on a 1TB drive.