My computer had low disc space so I recovered with Vista recovery disc then reinstalled Windows 7 Ultimate upgrade. I chose the option that didn't backup files because the other option failed. After a successful install the picture quality & resolution were so poor you could hardly read the letters so I put my recovery disc back in to recover. My problems then started. Kept getting operating system not found. After 3 days finally got past that; however I now have a new issue: computer boots up to desktop & within 10 seconds it reboots. It has been doing same thing for past 21 hours. Please help as I am in finals week and take my classes online, which is why I tried to free disc space to start with. Thanks in advance.