I have been trying to install a few programs and my laptop just doesnt want to let me. I have tried to download Microsoft Silverlight & it just says failure to install. Same with itunes, anti virus & skype. I have been trying for over a year and I have deleted alot of stuff off my laptop so memory is not the issue. I have been thinking about formatting my laptop but I'm worried about deleting everything and not being able to get any of it back such as acer webcam and vista and microsoft office?