OK - Just to clarify, you didn't do anything wrong. We were both posting at the same time and I was afraid you missed my instructions.
Your PC is infected with a rootkit, one that is attached to the Master Boot Record (MBR) of your hard disk. We usually have a good amount of success when it comes to fixing the MBR but the MBR is a delicate area and there is a possibility of data loss and/or have complete PC failure if the disinfection process does not work. Please back up any important data before proceeding.
Please also understand that some PCs have their own proprietary MBR that offer you the ability to boot directly into a Factory Restore Utility. Fixing this proprietary MBR can cause you to lose the ability to boot into the Factory Restore Utility.
Please look over these instructions before you begin and let me know in advance if you have any questions or concerns.
and copy/paste the text in the quotebox below into it:
MBR.exe -c 0 1 MBR_backup.dat
Save this as dump.bat
Choose to "Save type as - All Files"
It should look like this:
Double click on dump.bat & allow it to run. Two files should be placed on your desktop; add the MBR_backup.dat as an attachment to your next post BEFORE you continue with the rest of the instructions.
Once you've posted that file, continue with these instructions:
Earlier on ComboFix installed the Recovery Console.
We're going to use that now. Please print and read the instructions and ask any questions you have before you start:
Reboot your machine and when the Boot Menu flashes up - select "Microsoft Windows Recovery Console"
(you need to be very fast with the arrow key as you only have a couple of seconds before it defaults to the windows XP bootup)
When you get to the above screen, take note of the number that references your operating system.
If it's '1'
like the picture above, type 1
and press Enter
It will then prompt you for the Administrator's password. If there is no password, simply press enter. Otherwise type in the password and then press enter.
Next type FIXMBR
If it ask if you're sure you want to write a new MBR, answer 'Y'
Then type EXIT
to reboot the machine.
Let me know once you've successfully completed these steps.