most likely there is something remaining in the Windows\Run key in the registry, or in that user's (or other s on that pc) application data or profile folder that points to a file known to be related to that software, or a task that might even re-install the malware periodically. If you do a google search for Error Doctor Uninstall or Manual Removal , you should find some tips on what files to look for.
Have you tried a roll-back / restore in windows?
the server may be more problematic if those files exist there - your options with the server depend on what the server is, what files were added since the malware was detected, how they made it to the server & what your backup procedures are.
In the case of the client pc, if it has been worked on for a reasonable amount of time already & with no success, my next step would be to re-image the darn thing. If you want to be kind, you can try to grab whatever documents & files needed prior to doing so with it attached via external usb cable, but in my environment, we don't risk attaching affected drives to anything on the network. Use a standalone non-networked pc to do that & wipe that pc also when you are done.
Most users at my office are used to saving their important files to their network folder, so when an issue like this pops up, they get a new drive with a new image. that drive is pulled from their desktop pc, or they are given a loaner laptop so we can go to work on it off-network. Malware spreads so quickly these days, so as soon as malware is identified, if it can't be cleaned with our standard tools, or returns again after restart, the drive is wiped.
I have seen Softmon indicate "potential" malware that I know to be safe, so ultimately the decision on how to move ahead depends on your company's processes & how risky you feel this item is. If it is making its way onto a server without someone putting it there, in my mind there is still risk of additional infection or spread of the item & it should definitely be addressed.