Hi, The Symantec Antivirus Detection program on my computer recently picked up the following risk - Netbt.sys. The risk description is Backdoor.Tidserv!inf. I have tried removing it through Symantec Antivirus, however, it reappears once the computer restarts. I've followed the instructions under the "8-step Viruses/Spyware/Malware Preliminary Removal Instructions" thread, and have attached the files requested. Please advise how this can be removed. Thanks!!