Heres another thing to try.Looks complicated, but its not.
Read the link carefully ( print it off )
http://www.myantispyware.com/2010/02/03/how-to-remove-your-pc-protector-uninstall-instructions/Start at step 1, when you have typed notepad into the command box,hit the enter key.Notepad now opens, copy the text
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\exefile\shell\open\command]
@="\"%1\" %*"
You do this by left clicking your mouse,hold it down and drag the cursor over the text, which is then highlighted in blue.
Then right click the mouse and choose
copyThen in the notepad, right click and choose paste.
Then click file in the top left corner and choose save as. ( See diagram )
Save the file to your desktop, name it
fix.reg and save as type
all filesNow go to your desktop, double click on the fix.reg file, confirm yes and reboot
Hopefully now you can download Tdss killer and run that, a scan literally takes seconds