Restart computer few hours later, at night

One way is to create a scheduled task that includes command

shutdown -r -t 0 -f

Another way is to launch the command by needs:
Reboot computer after one hour

shutdown -r -t 3600 -f

Reboot computer after 2 hours

shutdown -r -t 7200 -f

Reboot computer after 3 hours

shutdown -r -t 10800 -f

Reboot computer after 4 hours

shutdown -r -t 14400 -f

Reboot computer after 5 hours

shutdown -r -t 18000 -f

Reboot computer after 6 hours

shutdown -r -t 21600 -f