Then try opening the start menu and going to run. Type C:\
Once that is open go ahead and go to the program files folder.
Try opening up various .exe files. If they are still broken then it sounds like the reg edit was for explorer. Anyway do a system restore by going to start>accessories> system tools> system restore. Follow the steps.
Hope you are all set.
When I came on the computer today, the first thing that came up was a warning from Lavasoft Ad-Aware telling me something about a regkey being modified and then it said Allow or Block. I figured it was a bad thing, so I clicked block and went on. My Firefox was working fine. However, when I went to open my iTunes, nothing happened. The only program working for me was Firefox. So, I restarted my computer and all of my icons to different programs showed up as errors (I don't know if that's the right word, but none of them would open). So, since I couldn't run any of my anti-virus programs to do a scan, I went online and ran the Trend Micro House Call scan... But, each time I do it, it gets to a certain point and then my taskbar disappears and I can't get it back.
I've tried searching everywhere for a solution but they all require me downloading something which doesn't work since I can't open any windows.
This is a HUGE problem for me and it would be great if someone could help. I hope I gave enough information, but if that's not enough, I'll be glad to give more...