Download Malwarebytes from here
http://download.cnet.com/Malwarebytes-A ... 04572.htmlIf you cannot do this on the laptop then download it to another computer and then pop it on a USB stick so you can install it on the laptop.
BEFORE you install the program restart the laptop in "safe" mode - to do this switch laptop on and hit the F8 key a few times and you should get a list of options - pick safe mode.
Once laptop up install Malwarebytes and let it run a FULL scan - when finished it will give you a result of infections so tell it to remove all.
Restart laptop and see if it is now cured.