My PC started doing this about a week or so ago - works fine and all, but sometimes, if i leave the PC for a while, then come back, as sson as i move the mouse my screen goes black and goes to stand-by mode. The computer doesn't reboot though, all fans are still spinning. But the monitor can't get a signal..
But most of the time it works without a problem for hours straight, and always works after a reboot (i first thought the LCD was dying but that can't be it)
Some specs just in case
Vista x86
Gigabyte P35C DS3R
C2D E6700
8800GT 512mb
Razer DeathAdder mouse and Tarantula keyboard (in case it's the mouse
)
Watercooled 5950X | AORUS Master X570 | Asus RTX 3090 TUF Gaming OC | 64Gb RAM | 1Tb 970 Evo Plus + 2Tb 660p | etc etc