22/11/2012
When your computer does not display anything on the monitor you have a No Display or Blank Display problem. This can be caused by any of the following reasons:
· Monitor or System has no Power
· Monitor is defective
· Loose VGA/DVI Cable Connection
· Video Card Problem
· AGP/PCI-e Connector Problem / Motherboard
· System RAM Problem
Monitor or System has no Power
First thing is to check if the system powers up when pressing the power button, if not check cable connections and the power source. Next is to check if the monitor powers up when you press the power button. If not, check power cable and the power source for the monitor.
If this procedure solves the problem, there may be a loose connection in the power cables of the system or the monitor.
Monitor Is Defective/Loose VGA Cable Connection
After checking if the system and monitor have power and you still encounter the no display problem, try to swap monitors with another computer to check if the monitor is defective or not. You can also try to reinsert the VGA cable to the VGA port of your video card to see if the connection is loose or maybe the VGA cable of you monitor is defective.
Video Card Problem / AGP/PCI-e Connector Problem
After verifying that the monitor is working, the next step is to check the video card. Power down your computer and unplug power cables. Open your computer and try to reinsert the video card. After inserting the video card, power up the pc to check if this solves the problem.
If this does not solve the problem try replacing the video card. After replacing the video card, if you still experience the problem, your system board or agp/pci-e connector might be causing the problem. You correct this by replacing your motherboard.
System RAM Problem
No display problem can also be caused by the system RAM. When your system RAM is defective or is not properly inserted in the memory slot of the mainboard. the system may not boot. You can try to reinsert the RAM or replace it if it is defective.
Refer to the flowchart below for troubleshooting a blank display problem:
Ben Carigtan shows you how it’s done.
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