i accidentally changed HKEY_CLASSES_ROOT's default value ,meaning I clicked on HKEY_CLASSES_ROOT's default file and changed its value to "exefile", now when i try to open a exe. file it simply says you need a new app to open this exe file. Can someone help? I can't restore my pc and i should've taken the initial value down. I was suppose to go into EXE folder instead of just chaning the HKEY_CLASSES_ROOT default value...can anyone help me out?