I want to reinstall Windows 7 Ultimate x64 with SP1 on my computer, but I don't want to lose my programs and files on C drive. Is there any possibility to do this without installing programs again? Because my computer doesn't work normally (for example: Network and Sharing Center isn't working properly or sometimes I cannot boot computer in first attempt). I tried Startup Repair and System Restore, but without success. I found a lot of solutions, but none of them exactly matches with properly reinstalling. Any chance to reinstall Windows 7 without any destruction on C drive? Thank you.