I reformated my drive with Windows Vista Home Premium 32-bit version. I ran the installation perfectly and I was able to boot the OS for the first time. But then I restarted the computer and my monitor is not geting a signal. I reformatted once again and use my 1440x900 Acer (Which by the way for some reason I can't run low RES on.) this time and the same thing. I can only get the OS up for the very first time. After that it won't start it just stops sending a signal. I noticed my computers cpu is working through the no signal... As if it's loading something. I'm checked the Device Manager and there's a driver for my ATI 1600x series already installed. I couldn't install CATALSYT drivers for ATI... It wouldn't let me.