I have found several topics about this exact issue. I wasn't sure whether or not I could follow those steps on my system to resolve my issue. In my Windows Task Manager I have a listing for csrss.exe. Under user name and the description tabs the entry is blank. When I right click it I get the normal pop-up menu where I can select, "Open File Location". When I left click on "Open File Location" nothing happens, and this occurs only with this file. I don't know whether or not this next thing is related. Whenever I shut down my PC it always says a program is running, with the force shut down selection. It closes right away, but it doesn't list the name of the file that it's try to close. If this isn't relevant, then I apologize. I use Norton 360 and Malwarebyte. Any help would be greatly appreciated!