Windows 7 After Login Desktop Icons White/Blank Says Can't Open This Item...

Hello,

I was hoping to find help with this issue. I think I may have been infected by a virus or something. I rebooted my computer after it began to slow down, and upon reboot, all my desktop icons were white/blank. I double clicked a couple of icons and a message popped up reading "This file does not have a program associated with it for performing this action..." Went to Google but the "solutions" I found were mostly referring to the programs started but the icons were just blank and resetting the icon file or something like that. The only program that I have been able to start is Task Manager in Regular mode, but can't open or create a new task. In safe mode I can open regedit and found a few registry tweaks to try and was able to import the first one, but after that got a message saying "the specified file is not a registry file..." I also tried to repair, and restore but Windows couldn't repair, and there wasn't a restore point available. Hoping to not have to reinstall. Anyone familiar with this issue and what can I do? Thanks in advance.