I have a Sony Viao with Win 7 Home Premium and I just deleted some form of Trojan with MS Security Essentials and then I ran windows updates before I restarted the machine. Windows update installed some security updates along with Service pack 1 and IE9. Now the computer will not load Windows. It goes straight to the startup repair but cannot fix the problem. There is not restore points other that when SP1 was installed and I gives an error every time I try to restore it. I can get to a command prompt and I have tried to run sfc /scannow but it tells me there is a system repair pending which requires a reboot and then does nothing. I also tried check disk(just as a last chance) but that didn't do anything. Is there any other way that I can repair windows without re-installing windows?