For some reason, my computer continues to restart itself everytime once it reaches the welcome screen. I used setup and all, but it still wont work. What can be done to reverse the damage?

hello octaves, wlelcome to PCHF. Have you tried starting up in Safe mode? when you start your computer, once it passes the POST screen, (the first screen with text) repeatedly press F8. it will come up with a menu, and select, "Safe mode" and see if that works.