the block checker doesn't exist, it is actually a virus that you have downloaded.
this is how you remove the virus...
Step 1: Killing the processes- Download Sysinternals' "Process Explorer" here and install it.
- Open Process Explorer and kill "csrss.exe" first.
- To avoid killing the wrong csrss.exe process, look at the "User Name" column which lists who has started the process.
- If it is "SYSTEM" or "NT AUTHORITY" or the likes, then it means it is the legit windows process started by Windows itself and shouldn't be killed. If it is your username/computername then it means the csrss.exe process has started up as a normal user program and thus is not legit and the fake one.
- This is the one you need to kill...
While still in Process Explorer, kill "block-checker.exe" if it is still there.
Step 2: Removing the files- Uninstall the block checker by going to "Add/Remove Programs" in the control panel.
- Go into "C:\Program Files" and delete the folder labelled "Block Checker" (where C:\ is the drive you installed Windows on) if it is still there.
- Delete the "exclusion_AOL.ini", "exclusion_MSN.ini" and "exclusion_Yahoo.ini" files located in windows' system folder (C:\Windows\System).
- Clean out your recycle bin to totally remove the files from your HDD.
Step 3: Fixing the registry- Open your registry editor (Start > Run > regedit.exe) and navigate to "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" and delete the key named "block-checker".
(For a small tutorial on this, go to this site, because deleting the wrong keys could corrupt Windows).
taken from
http://messengervn.blogspot.com/
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