Need professional help, why does my computer keep rebooting?
I have seen this issue many times before. Check the capacitors if they are not flat on the top you have a mother board issue and the first step is to replace it. You won’t know till then if your CPU, RAM or video card is OK because overloaded capacitors can destroy any card or chip plugged into the board. The most likely cause of this issue is power fluctuation on the circuit your computer is operating on. Buy a UPS with line conditioning and that should prevent the issue in the future. Also it is possible to have this problem with a good PSU.