So my pc has gone to sleep like it's supposed to for many years, but now it simply won't do it. I can do it manually, but it won't go on a timer like it has previously. I have tried all the solutions I found on the internet ( mostly changing settings in device manager to allow the computer to sleep and also in power and sleep options) but none of them have fixed the problem. The changes I have made to the pc recently is upgrading my gpu, psu, added a few external fans and also updated a few drivers. But that shouldn't affect pc going to sleep right? Also when I restart my pc it seems to go to sleep 1 time and when I wake it up it won't do it again until I restart it again. I'd be very thankful if someone could help!