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05-01-2011 05:14 PM
I recently upgraded my psu to 460 watts before attempting to install a Sapphire HD5670 video card. I followed the instructions and all I get is a black screen. After removing the new card and reenabling the onboard graphics everything is normal. If the new card is in the PCI x16 slot nothing comes up on the screen. Here is a link to my system: http://h10025.www1.hp.com/ewfrf/wc/document?docnam
And the new video card: http://www.sapphiretech.com/presentation/product/p
OS: Vista Home Premium with 2G of RAM
The system bios offers no PCI Express (x16) option. The 2 options are PCI and Onboard.
Thanks for the help.
05-05-2011 09:14 PM - edited 05-05-2011 09:17 PM
Check other slot , or PCI x16 slot wth different card ,,, And if it does not work with other card,,, U need to replaces the Motherboard , and for that call the HP tech support or chat with Tech support agent... Below is the link on which u can get Tech support info for ur product... How to contact HP
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05-06-2011 08:51 PM - edited 05-06-2011 08:54 PM
I have seen a few posts where the ATI HD 5xxx video cards would not work with older HP PCs. The a6257c only has 250 watt power supply so that might also be an issue.
You should try a bigger power supply perhaps 500 watts and then if that doesn't correct the problem then get a NVIDIA video card.
A competent PC repair shop should be able to connect a bench power supply to your PC to see if that is the issue.
BTW, Sapphire calls for a 400 watt power supply for the ATI 5670.
05-06-2011 08:58 PM
Thats correct U need to upgrade the Power supply as well when u decide to upgrade the video card according to the card requirmnet... And no harm to upgrade the PS up to 450 Watt...
05-07-2011 05:23 PM - edited 05-07-2011 05:30 PM
Then the solution is to get a NVIDIA video card. Try clearing the CMOS. It's a long shot.
It seems a bit strange that two responders would have missed the first sentence in your original post. Sorry.