I had the same problems all my shortcut had opened in photoshop even another exe programs, wmp, internet, explorer, spc companion, everything!!! but, I found the problems and I could fix it, they are like before
first- you should open START, click in SEARSH PROGRAMS and you need to write REGEDIT , push enter or click on, now, you should open some folders and sub- folders
HKEY_CURRENT_USER (next) Software (next) Microsoft (next) Windows (next) CurrentVersion (next) Explorer (next) FileExts (next) lnk
look the forder it's name is user UserChoice and delete, that folder is the problems that you made, closed, and reset windows, all is going to change like before
I going to repeat
1 start (click)
2 searh programs (click)
3 Regedit (you need to write this and open it)
4 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts.lnk (you need to find these sub-folder clicking)
5 UserChoice (you need to find and delete this folder that's the problem that you made)
6 closed, and restart windows
all you shortcut and exe program going to change like before (originals file)