I have a new rig installed with Windows 7. Everything looks groovy except for when I'm installing games through Steam/Origin. When I get up in the morning, the application and the download have closed up shop. I initially set the hibernation period to 'never' but that didn't seem to help. This morning I set the Power Saving mode to 'high performance' and set the hard drive sleep timer to 999 minutes. Any other ideas out there?
might have been windows update... there was a patch pushed like 2 days ago... this would explain your programs being gone... was it back at the login screen or just sitting at the desktop if it was at the desktop do you have auto login turned on?
Windows 7 is setup to automatically do a lot of stuff by default. While nice for the average user, it can sometimes be really annoying. I stopped using sleep mode on my HTPC because it likes to wake itself up to perform tasks in the middle of the night. Maybe one day I'll turn off all those midnight tasks so my computer stays sleeping instead of having to power it down.
Check your task scheduler and see what is happening in the middle of the night. I wouldn't be surprised if Windows Update went off and rebooted your computer.