It may the hard drive that would not let the setup continue. Had to buy a new harddrive. I have a new hard drive and everything is okay now. I really hope that this has not happened to you.
When i start my computer, it reboots. What can i do?
It may have an issue with power, or a fan not working, our a hard drive sector that is bad.
Most PC's have diagnostics you can get to as it is booting up. Look on line to find out ways to troubleshoot your particular model, or call the support line for that PC.
This could be related to software or hardware problems. You'll have to rule them out 1 by 1. You have to be more specific on the exact time it reboots (before the BIOS screen, after the BIOS screen, on Windows screen, when it enters Windows). Honestly, I've experienced almost every case of reboot problems and it always is something different. You have to start with the most simple solutions or get it to a repair shop.