@1. Disabling System Restore
1 Click Start.2 Right-click My Computer, and then click Properties.3 On the System Restore tab, check Turn off System Restore or Turn off System Restore on all drives.
If you do not see the System Restore tab, you are not logged on to Windows as an Administrator.4 Click Apply. 5 When you see the confirmation message, click Yes.6 Click OK.
@2 Scanning for and deleting the infected files.
a)Updating the virus definitions......update ur antivirus definitions......then scan
b)# Run a full system scan.
c)# If any files are detected as infected with Backdoor.IRC.Bot, write down the path and file names,(on a paper) and then click Delete.
@3)Reversing the changes that were made to the registry
# Click Start, and then click Run. (The Run dialog box appears.)
# Type regedit Then click OK. (The Registry Editor opens.)
# Navigate to the key:
HKEY_LOCAL_MACHINE\SOFTWARE\ Microsoft\ Windows\
CurrentVersion\Run
# Refer to the list of infected files that you created while following the instructions in step c of the previous section, "Scanning for and deleting the infected files."
In the right pane, look at the entries in the Name and Data columns. If you find an entry that refers to a file that was detected as infected, select the entry, press Delete, and then click Yes to confirm.
# Exit the Registry Editor.