Hmmm. gimme a minute i'll see if I can come up with anything... do you have a error code or anything show up when you attept to launch? does cmd launch for a second then close?
system restore to earlier?
But then he would lose all his recently downloded researcho
Redownload?Save to USB stick?
Problem solved all is well
You just need to change the application .exes open with I think. Google hao2do.