MS Access Problems with Button Giving errors

I have 10 computers all computers work great, this one computer whenever I click a button, I get an Error the expression On Click you entered as the event property setting produced the follow error: there was an error compiling this function . This just started happening and THERE IS NO MISSING REFERENECE. It works fine on other computers this just started. Also when i load up my VB Editor (ALT+F11) I get a black screen, I fixed that by going in and resetting all the colors its like something messed with this computer. I need a super expert on this please. Thanks Steven