|trvlr is right but if you have a job to catch it just keep tapping F8 immediately after powering up (until it gets there, or there is an obvious change0. That takes you to the startup menu which is white letters on black background. You then select Safe Mode from the list.|
However, before you select from the list is the black screen also displaced?
An even better test is to attempt to get into BIOS (setup). We would need your computer make and model number to advise what key to press but it usually mentions it as "Setup" on the boot screen. If that screen is displaced then it's just about certain you have some sort of hardware fault (inc monitor) because the Setup (BIOS) shows before Windows has even started. By the way, if you make it to the BIOS menu and can't see how to exit without saving, then just hold the power button down for a few seconds and restart the computer. You don't need to change anything in BIOS, just see if that screen is also displaced.
Always pop back and let us know the outcome - thanks
message edited by Derek