looking this over once more I don't get this part ??
'' i have tried to install the drivers with a nother card in the PC but then it just wants me to install the XFX card to continue!''
first you should uninstall your old driver as per AMD/NVidia instructions in the drivers release notes .. then your old card should after reboot show it on the built into windows standard Microsoft vga driver
then you shut back down and remove the old card and install the new card - by default the card should post/display at least the bios screen as all working cards will [but this may still come down to your old bios for the board and the newer bios on the card being compatible as a few find its not the case and as one guy said in a post he had to flash his card to a early bios for his r9 card in order to get it to work ??? wow
now if your new card displays the boards bios screen and then will not display for windows 2 things to look at
first you may not of remover the old cards driver correctly [ some series of amd cards will not ''hot swap'' like my old 6850 loaded drivers will not run my 7850 card ] - so I have to do a clean fresh driver uninstall and install between them - so regardless all ways do a proper install/uninstall of drivers
2ed thing is I see your board supports xp and vista ?? so if you still use that os the only amd driver you can use is the 13.12 [maybe]
heres what I see funny I go here and Manually Select Your Driver and use your card and xp and get this [vista is 13.12 that's the last vista supported amd driver ]
http://support.amd.com/en-us/download/desktop?os=Windows%20XP%20-%20Professional/Home&RenderOnServer=true
now funny theres no link for the release notes ?? and theres this stated
'' Supported Products:
AMD Radeon™ R7 260X
AMD Radeon HD 7790 ''
so is it the only 2 cards supported under xp and this driver ???
so unless you got windows 7 or above you may have a non compatible driver installed and windows cant load it to run the card in order to display ???
sad thing is over all vid cards are not as plug and play as before and they feel you need to support them and not them supporting you