i have an employee that left the company yesterday, someone told me he copied a bunch of stuff from his assigned windows pc. Is there a way i can check what he copied ?
Sorry, but there's no way to determine this. You can safely assume that the person copied everything they had access to.
If this issue is important to your company, they will need to look at a document management system that utilizes a versioning check-out/check-in based strategy. In this scenario, users are not allowed to access raw file shares and would need to use the client software to access files.