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I recently purchased a graphics card for my PC. The new graphics card required me to upgrade my power supply, which I did successfully. However, the graphics card isn't working. When it is installed, the monitor will not acknowledge that it is receiving a signal. I have tried both the original vga plug and the new plug in the video card, nothing. It just remains black then tells me that it's going to sleep. Help! What has gone wrong? I have tried disabling the onboard chips, still nothing. I have an HP PC with Intel, running Vista. The computer is a couple years old. The newly purchased graphics card is an ATI Radeon 5550 (recommended to me by an associate at Frys)

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  • mistress_nig Jan 06, 2011

    The reinstall did not work. I do not have another computer to try the graphics card in, so I am having to deal with the manufacturer to determine if there is an issue with the card. This may take some time. I am worried that the card I purchased may not work with my computer. Is there reason this may be the case? Or could the power supply be the problem? Is it not powerful enough? I opened the computer while it was running, can could see the fan on the graphics card running, so I don't know.

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Hello.

Since you successfully disabled the onboard video card and the card is not working, remove the card, enable your old card and re-install the drivers for ATI Radeon. Disable your on board card again and install the new card.

Also, try the ATI card in another computer to see if the card is faulty.

Hope this helps.

Posted on Jan 03, 2011

  • NinaE Jan 06, 2011

    If you installed the Vista drivers for your ATI Radeon 5550, the card should work. Sorry that you don´t have another computer to test (most people don´t, but I thought i´d ask). Perhaps it is time to return the card.

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