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07-01-2010 09:16 PM
I've installed an XFX Radeon HD 5750 and upgraded the power supply to a 460 Watt PSU. I went to BIOS and set PCI-E x16 as the primary video adapter. Computer defaults to the onboard video though. I've checked the card, reseated it; checked the power connections, made sure they're plugged in all the way. BIOS, however, fails to detect the card. The device never shows up in the device manager for Windows. I've tried disabling the driver for the existing Intel integrated display and restarting but still no joy. What should I do?
07-01-2010 09:58 PM
Trying clearing the CMOS. It's a long shot.
This could be bad news. I have seen some trying to use the newer ATI cards in older HP/Compaq PCs only to have to return the card and get something else. The 5750 is a great choice. The bios and motherboards may not be totally compatible with the newer ATI cards.
Review the ATI and NVIDIA performance specifications. Look at the memory bandwidth specifications and the DirectX level support. The NVIDIA GTS 250 or GTX 260 might work depending on the video card amperage requirement and what your power supply puts out on the 12+ volt bus.
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