the problem just disappeared as soon as I tried out the GTS 450 because of course the issue goes away right when you post about it! I'll just run the 450 from now on, thankfully it's just some spare card I have on hand. my guess it's something with power delivery from the pcie slot since the 450 has a 6pin, idk but it works so I'm happy. I'm still going to swap the cmos battery because it's the original from the factory to my knowledge. Thanks for your help!
Hi, I have this Precision T3610 I use as a server. It was working fine just fine with a VM but a few days ago my windows performance was incredibly slow with nothing running (no background tasks, fresh boot, all startup disabled) and the VM also ran incredibly slowly. sometimes the screen would go black and everything unresponsive but HDD activity still running. I normally RDP into it, that also doesn't work. I reinstalled windows and it wasn't really any better but I just left it because I didn't care enough to fuss with it.fast forward to today, I wanted to start up an MC server for my sister so I got that running then after like 2 minutes, unresponsive, screen black, no RDP. Plus the server ran worse than if I used a pentium 4. After fussing about I found 2 ram sticks decided to not be recognized in bios, then the rest weren't, everything broke. I got the ram to work (turns out half of my 8x8gb ECC was DDR3L, oops) but the system still runs incredibly slow and the crashing still happens. Specs:Dell precision T3610Xeon E5 2680 v2 (10c/20t)4x8gb PC3-10600r (Samsung M93B1K0CH0-CH9, 2 are generic, 2 have HP sticker)240gb SSD + 1tb and 2tb HDDsNvidia GT 530Windows 10 Pro I've reinstalled windows 3 timesI've ran 1 stick of ram (made things 10x worse)I've tried multiple GPUs (GT 530, GT 705, GT730, r9 360, about to try a GTS 450, 1050ti, 3060ti) I know all cards workI've tried moving what slot the GPU is inI've upgraded bios, downgraded biosI've tried different driver versionsI've tried manually installing dell driversI'm completely lost hereeverything feels like when I tried to install windows 10 on an HPE Proliant DL360, super slow because it doesn't support windows 10 but the precision supports it.
Precision T3610 incredibly slow in windows 10 even on fresh install + 
instability