Recently the graphics card in my pc decided to break so I got someone to install a new one for me ( since I know next to nothing about computers ) so he installed it and downloaded the drivers but a while after that everything went haywire the computer wouldn't play any thing that has anything to do with videos. So I tried to update the driver and that went fine until I rebooted the computer after it booted it was incredibly slow, to the point where even moving the mouse took a long time, so I started the computer in safe mode and all was fine, but the only thing a can do to get it to run at normal speed without being on safe mode is recover, and reset to a earlier date but this deleted the driver and the problem starts again, and again... I'm not very good with computers so please no highly techncal answers, thanks in advance.