If Windows is unable to load due to issues with a video card (many times a result of a bad or incorrect driver), it may be necessary to restart the computer in VGA Mode. This mode of Windows is very basic (having a resolution of 640x480), allowing users to diagnose a computer problem, including video card problems. When VGA Mode is loaded, only the minimal video drivers are loaded.
VGA Mode can be accessed by pressing the F8 key shortly after the initial POST screen is displayed on computer start up. If entered properly, you should see a screen similar to the above example.
If you're encountering problems that are not related to the video display, we suggest using Safe Mode instead of VGA Mode to troubleshoot your computer.