Avast Sandbox

I opened a downloaded .exe file in the sandbox mode and it messed up my msn messenger, my skype and internet explorer, how can I restore the original data again?
Thanks,
~rsauxil~

Re download the exe file and run but tell Avast to let it run normally, if you are sure the file is safe

The file was a sort of virus, so it’s really not safe. Now my question is how do I restore the damage this file made to my computer.