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Black screen at start up

I have a compaq desktop.When I turn it on I her the fan run,but the screen stays black.I can let it run for awhile but nothing happens. I am thinking of a driver update but Ido not know how to do that when the screen does not come on. Is ther a way to transfer a update through my laptop to the desktop

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  • Stellyx
    Stellyx May 11, 2010

    Are there any beeps that are out of the ordinary?

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Isolate the problem in the following order:

1. Make sure that your display monitor is working fine by checking it on another computer. Try to check the display cables from the PC to the monitor as well and make sure they are connected properly.

2. Check the RAM. If there is a problem with your system RAM, it will normally give certain indications like a series of beeps. Try to power on your PC without any RAM installed and you should hear a series of beeps. Count it and try to compare it by turning on the PC with the RAM installed. If it gives the same number of beeps with the RAM installed, then you most probably have a problem with your RAM. Sometimes, this problem could be resolved by reseating (removing and installing) the RAM. Take note that you should unplug the power cable before performing this step.

3. If your system has a built-in VGA display then skip this step. If your desktop has a VGA Card (the one connected to the monitor) then try to reseat this as well. Most of the time, especially on compaq machines, the VGA card has a tendency to get loose during shipment.

4. On rare cases, i encountered problem with the power supply. Check that the input voltage you're using is correct. Some desktops have 220/110V switches on their power supply. If it is switched to 220V and you're home electricity is 110V then you'll get undervoltage condition and therefore improper voltages will be produced. Please make sure about your home electricity rating, as making mistake here could cause a damaged power supply.


Posted on Nov 13, 2008

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