I already have a slow internet connection, but now every time I get on the internet it freezes or says not responding. Then if you press ctrl-alt-delete a blue screen comes up. You press a key it goes back to the screen and is frozen so there's nothing else you can do, but to start your computer all over again. I do it every single time. I asked jeeves what was wrong and it's saying that I need to clean my registry, but I can't find a way to because spyware and virus scans don't help they don't see a problem.

restore registry?

I downloaded a program tat said it could help me clean my regisrty because my computer had crashed. I accidentally deleted important files like access to any .exe file or something like that. Now I cant even open the My COmputer Icon or anything else. I made my problem even worse, Can someone tell me what to do?
How do I access the restore? I got this pc of )@#% from my father in law and he got it from his company, i dont have any software or backup disks, so what can I do?

I am thinking of buying or downloading free the best registry cleaner and I want good opinions before I do.

My computer has slowed down for a long time. I've scanned the PC concerning viruses, looked through the registry, but wasn't success. I think the main problem is in litter registry and want to clean it by myself.

I have a windows vista home premium computer, i had backed up the registry unfortunately after i had already done damage, is there away to restore it to default?