I have a HP computer it is only about 1 year old and I run Windows 7 Home Edition on it . The problem started about a month ago. I always leave my computer on and the screen. If the computer sits for an hour or so un-touched you can't open anything up. I have clicked on everything even trying to restart it from the start button does not work I have to physically cut the computer off and turn it back on. I should mention I downloaded the windows explorer 9... Please help this is getting very annoying.