Black screen on boot up no bios

Solution 1:

COMMON EASY ISSUE: Did you recently move the computer and plug the monitor into the on-board video plug when you actually have a video card installed.

MONITOR: Try replacing the monitor first with another one you have laying around.

VIDEO CARD: Take the video card out and reseat it. If that doesn't work then remove and try onboard video or a different video card all together

MEMORY: If your memory is not seated properly (not in), is damaged, or even absent altogether, this can cause a black screen. If you have more than one memory module then try one at a time to see if either is defective.

POWER USPPLY: Black screen on startup with an amber flashing light. A flashing amber light along with your black screen on startup can mean that you are not getting enough power to the motherboard, the power supply is dead or a pin or shorted port may be present

OTHER: Leaving a bootable USB flash drive connected to your computer can cause a black screen.