I have recently had to a clean reinstall of Windows 10 on a 5 year old PC (high spec'd in the day so still very functional). When I put it into sleep mode I can hear the fan accelerate and then it just gets stuck like that - the fan runs, it never turns off. The screen, keyboad and mouse all seem to go off, but the fan keeps running. It can't be woken from that mode, I have to restart using the power or reset button.
I have googled this for hours - tried changing all sorts of options e.g. disabling windows fast start, various advanced power options. Some posts suggested the speeding fan sounds more like hibernation - but I have disabled every hibernation option I could find, it should only be sleeping. I've looked in power options in the BIOS but can't see any settings there that I could see having an impact. I'm at a loss - any suggestions?
I have googled this for hours - tried changing all sorts of options e.g. disabling windows fast start, various advanced power options. Some posts suggested the speeding fan sounds more like hibernation - but I have disabled every hibernation option I could find, it should only be sleeping. I've looked in power options in the BIOS but can't see any settings there that I could see having an impact. I'm at a loss - any suggestions?