sleep vs shutdown - HP Z640 Base Model Workstation

[lse123]

Sleep vs shutdown - HP Z640 Base Model Workstation

When I put this PC in sleep mode, and after 4 or 5 hours, I come back all ok and woke up, but after more than 5 hours in Sleep mode, the PC will transported auto into shutdown mode... and needs to press the power on button... well, how to fix this?

[DGroves]

based on your description you most likely appear to have a application or OS process that is crashing and the most common cause is a memory leak that over time consumes all available free memory locking up the OS

you will need to look at the windows error system logs,  google how to do this

uninstalling all user software then testing sleep will also show if it's windows itself or a install software causing this