You say you tried to restore, what does that mean? System restore, Windows Backup Restore, or 3rd party program restore? If you haven't tried System Restore, that would probably fix the problem. But the first thing I'd do would be to boot to Safe Mode and scan for viruses and malware.
When you've gotten your system back like you want it, I urge you to get yourself an external hard drive and a good 3rd party backup program. You can set it up to do everything automagically at the time and frequency of your choice. 1 TB external hard drives are about $70 these days and a really good FREE backup program is the Easeus Todo Backup Free which you can download from
http://www.todo-backup.com/products/home/free-backup-software.htm . That can save you a lot of time and frustration the next time something like this happens. Sooner or later it happens to all computers for one reason or another.
Help!! I've screwed up the laptop and my husband has to have it for a presentation. My computer is a Lenovo 3000 N100 and I run Windows 7. I was trying to download a program but it told me Mozilla couldn't open it and did I want to go on the Web to find a program to open it or choose one from existing an existing one. I chose Notepad. All of programs on my desktop now have the Notepad logo and when I double click on any of them the Notepad page comes up. Even when I click to get online, the notepad page comes up. I've tried to restore but it tells me there is an error in the SW_Preload (C:) and it won't let me restore. What in the world have I done? Thanks for any help. I'm desperate!