I used the program, Refresh tool from the frontpage. And I set my settings to 120 (was 60 before). I had a 4 year old screen and I don't think that it could handle it. The PC goes through the bios screen, Win XP black screen but the screen goes black when I get to the logon screen. The screen goes onto the orange light, (green light when on). The orange light is the same as when my PC goes to standby. When I type in my password and press enter, the PC is working, because I can hear my windows logon sound, when I get to the desktop, but it does not show up on my screen ! I have to give in some work, which is on my computer on Tuesday. Please can you help !!! I will be very grateful ! PLEASE !!!!!!!