Hi y'all , I have a Dell Optiplex GX620. About a month ago I upgraded from win7 to win10 , ever since the upgrade it's been a constant nightmare with my pc always restarting. I then decided to format my hardrive and reload win7 with the problem persisting I.e. the random constant restarting. My specs are "Processor : Intel (R) Pentium (R) CPU 2.80 GHx 2.79 Ghz ; Installed Memory (RAM): 4.00 GB (3.49 GB usable) ; System type : 64-bit Operating System". In addition I have unchecked "Automatically restart " in Start and recovery. I would really appreciate it if someone can assist me in resolving this issue.