Hi there! I hope you can help me a little.\n\nI'm using Vista Ultimate.\nYou can suppose that if I'm writing here it's because I'm finding some\nproblems (and I'm unable to solve them by myself).\n\nI'm quite sure that I don't have malware on my computer. It's usually\nnot connected to internet.\nI think I have some kind of system files & registry corruption.\n\n"Chkdsk" says the filesystem is ok.\nNext step would be running "sfc" (sfc /scannow). But it refuses to\nstart.\nThe message is: "Windows Resource Protection could not perform the\nrequested operation."\nI already tried it starting in "safe mode".\n\n\nI tried also to install "Service Pack 1" but it I couldn't.\n\nWhat can I do now?