Hi, I know that a lot of people already asked this question but i tried everything that was recommended and couldnt fix the problem, so i have decided to ask the question again but with a specification. I have a Sony Vaio VPCEH with Windows 7 and recently i found out that my windows security center system was not on and tried to but they said that it cannot be started. I tried to find Security Center in Services and it was not in there. I also tried in Safe Mode but still no success. I also ran AVG Anti-Virus and MalwareBytes and found nothing... Can anyone help me?? thks

Run sfc.exe /scannow as a adminRegards, Kalyan.

You may try to run In-place Upgrade to repair the system. How to Perform an In-Place Upgrade on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2 http://support.microsoft.com/kb/2255099Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.