Windows has stopped entering sleep mode

Soldato
Joined
22 Aug 2010
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On the Wagon-East Angular
Hi all - for some reason my PC has decided to sort of stop entering sleep mode automatically. It's set to enter sleep after about 30 mins, but recently it's stopped doing so fully. If I manually select sleep it sleeps fine, but leaving it to automatically do it no longer works correctly. OS is Win 10 version 21H2 The only two recent software add-ons I can think of are VoiceMod and DisplayFusion. I've tried removing these from startup so they no longer run, but the problem remains. The system used to entirely turn off when sleeping, with just the case light blinking.

Now, when the PC is meant to enter sleep mode, everything blinks for for a split second, the motherboard does appear to fully turn off (the led backlights turn off at any rate) and the monitors turn off/go dark but all the fans continue to spin, as does the fan lighting, and the pump also continues to run (flow propeller continues to spin), and the 12v output from the PSU is still active (I have a 12v thermometer as a backup to show water temp that uses a 12v output from the psu).

I have a Razor Chroma to control LED lighting, and an Aquasuite Quadro controlling the pump and the front three intake fans (the three exhaust fans run directly from motherboard headers and these also continue to spin). These are both connected to a Kolink Internal USB Hub that then connects to one of the USB headers on the mother board. Board is a MSI B450 Tomahawk MAX 2, cpu is a 5600x
Any ideas of what is the issue, or where to start looking? There's been no other software changes recently I can think of, nor hardware changes for 3 months.

Ta :)
 
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