have a samsung laptop installed with windows home 7basic, when I installed Ubuntu it damaged the MBR and I cant access my Samsung recovery Solution. I uninstalled Ubuntu. I have accessed the samsung reovery solution by makig it as a ntfs parition ( using "set id=27 override command) and performed a factory rest. But now my windows 7 is very slow and sometimes it freezes. I think the files in my recovery is corrupted. Inorder to check this I installed Windows 8 release preview and it works fine. Any help to fix my laptop as I dont have licence, the only way is recovery solution and its corrupted.