Hello and thank you for checking out my post!
I was recently given an old HP dc7800 Desktop and a VisionTek Radeon HD5550. The person who gave these to me said that he used the combonation of PC and GPU before and it wasn't currently installed because he had upgraded his GPU a while ago before moving on to a new PC.
I installed the Radeon HD 5550 into the only PCI-E Slot on the MoBo, booted up the PC and used Display Driver Uninstaller to remove the old drivers and rebooted. I tried to install brand new AMD Drivers (14.12) but the installation failed saying that it couldn't detect any hardware.
I double checked to make sure that the GPU is seated properly, checked the Device Manager, but nothing is there. I've tried using DVI, VGA and HDMI but my monitors didn't receive any signals.
How can I make this desktop recognize and use the graphics card?
Thanks in advance.
Edit: To not Two
Edited by BazookaSamurai, 20 December 2014 - 05:18 PM.