A bad virus infection requires careful research into what the virus does and how to clean it. Symantec is very good about this on their website. Additionally, once you have the system "clean" of the virus your work may just beginning. I have yet to see a badly virus infected computer that did not have additional viruses as well as Spyware and/or Adware on it. If you are new to this kind of problem, you either need to take the needed time to research the problem or contact a professional who has done this before. Some of the steps that may be involved in a cleaning/recovery: 1. Dismounting the hard drive, mounting in a lab computer with another hard drive that has an OS on it, booting to that drive and scanning the drive in question. 2. Cleaning the registry 3. Restoring the registry 4. Modifying registry permissions 5. Restarting into safe mode, several or many times 6. Reinstall AV software 7. Manually replacing corrupted files 8. Run the OS install on top of itself (often called in-place upgrade of same OS) 9. Reinstalling service packs and updates 10. Installing and running 2-3 anti-Spyware programs such as Spybot Search & Destroy, Lavasoft AdAware and MS AnitSpyware. 11. Modifying the HOSTS and LMHOSTS file, or replacing it. If you know what you are doing, plan on spending at least 4 hours working on this, but more likely 6-8 hours. John T eServices For You "Seek, and ye shall find!" -----Original Message----- From: Shamshad Ahmad [mailto:sahmad@xxxxxxxxx] Sent: Tuesday, February 14, 2006 10:33 PM To: [ExchangeList] Subject: [exchangelist] OT: Windows XP virus removal http://www.MSExchange.org/ Dear All We have a windows XP (NTFS partition) system badly infected with virus. It does not allow doing anything on it, I don't want to format and rebuild the systems , how can I clean viruses from the systems , it is not allowing to install anything on it , there are rescue disks which can be used in 98 and Me only . What could be solution for this, ca n we somehow boot from dos and run any antivirus that supports DOS as well as NTFS PARTITIONS? Thanks in advance Shamshad Ahmad