Hi, the background on my brother's laptop was changed to some statement about a virus and a need to pay to fix it. Here is the pic of the wallpaper.
Also the CPU usage is almost always at 100% so everything goes super slow. I am not able to do a system restore and Malwarebytes protection monitoring can not be turned on. Not even Malwarebytes chameleon works. Any help would be greatly appreciated.
Toshiba Satellite L505
Windows 7 Home Premium Service Pack 1
64- bit operating system