Combofix...can it be stopped?

I am in a panic, somebody help me please. I am somewhat technically savvy, but not to the level of almost anyone on here. My work computer had been experiencing extreme malware issues, and I followed the Read Me and used Combofix as the third step. Now, Combofix has been stuck on the initial message for nearly an hour, and I suddenly can't access a "Shared" file that had lots of documents in it that I had no issue accessing before Combofix started.

I can only assume that the two are related. What can I do? Please tell me something is possible? I know Combofix creates a Restore point when it first starts, can I stop Combofix somehow and go back to that infected point where I had access to everything?

 

I have not done anything, it's just sitting on the my work PC's screen. It only has the initial message, none of the "Stage 1, Stage 2" etc. that the Read Me describes. How do I stop Combofix? And if I do, will my computer go back to where it was before it?

 

Oh man, thank you so much! Everything is back! Am I to take it that the Combofix program essentially locks everything inside of the computer it's running on?