My monitor says no signal, but my computer is booting. I tried another monitor and same thing. Do I need to replace the graphics card?
You do not say which operating system you use.
Have you tried the same monitor but a different monitor cable?
When you say it boots, can you see the hard drive activity light flahhing, can you hear the windows login tone. Unlees you can see and hear all these things, the computer is not booting (worse news). If you can, it is (better news).
If your monitor port is in the same, small 6" (15cm ) rectangle on the left hand side of the computer near the other ports USB, mouse, keyboard etc., then your graphics chip is on-board, irremovable and fused to the motherboard.
If it is on its own, lower down, near the botom of the computer, you have a separate, dedicated Graphics Card, which can be replaced.
If it is on-board graphics that is faulty, you can add (rather than "replace") a graphics card to bypass the on-board graphics chip.
If the on-board graphics card is faulty, there may be a fault in the graphics bus on the motherboard, so a separate, new graphics card might not work.
First you need to continue the process of elimination to isolate the fault.
Try removing all cables from the back of the computer, opening it up, carefully cleaning any accumulated, dust, dirt and grime from the inside with a vacuum cleaner with a thin attachment, then carefully using a screwdriver to unclip and remove and reinstall the small CMOS battery for 2 minutes. This clears the BIOS memory from the motherboard. Then reconnect the cables and test again.
Then I recommend taking the tower to a repair shop and asking them to test a used, higher wattage Power Supply Unit. Sometimes underpowered PSUs can cause a stalled boot.
If this does not work, ask them to test a used, dedicated graphics card. If it works, buy a new warrantied graphics card.
If the graphics card does not work you might either need a new motherboard or a new computer base unit (tower), depending on the comparative cost of the motherboard + the labour for reinstalling and configuring the new motherboard with your original hard drive and its operating system + the cost of diagnozing the fault and installing the motherboard and a new computer base unit.
I hope this helps.
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Aug 31, 2011 |
Acer Aspire M1641-U1521A PC Desktop