My pc dont recognize my ATi 3850

[OGboy]

well... yes,my pc dont recognize it...i just had to disconnect it the card/(it worked fine before i took it off)
and today when i reconnected it, screen resolution was 1240x 1024 or something like that :s my screen is 19'' 1440X900
RivaTuner sayz: GPU1 \ unattached device,256-bit RV670(320sp) with 256 DDR3 memory so i guess that those specs arent onboard's... i downloaded the last driver for my gpu but still nothing! i did a rollback, i've cleared the cmos many times, i tryed to reinstall the device,uninstalling the driver from "devices manager" and reinstalling it again...
the weird thing is that my older gpu, nvdia 8500gt is working fine,my pc is recognising it as 8500gt... so at the moment the 3850 is working as onboard,is named as "standard graphics adapter"

can any1 help me?

_____

intel core 2 duo @2.2ghz
2gb ddr2 ram
psu 600w arctic
gigabyte GA-946GMX-s2

 

[OGboy]

well... yes,my pc dont recognize it...i just had to disconnect it the card/(it worked fine before i took it off)
and today when i reconnected it, screen resolution was 1240x 1024 or something like that :s my screen is 19'' 1440X900
RivaTuner sayz: GPU1 \ unattached device,256-bit RV670(320sp) with 256 DDR3 memory so i guess that those specs arent onboard's... i downloaded the last driver for my gpu but still nothing! i did a rollback, i've cleared the cmos many times, i tryed to reinstall the device,uninstalling the driver from "devices manager" and reinstalling it again...
the weird thing is that my older gpu, nvdia 8500gt is working fine,my pc is recognising it as 8500gt... so at the moment the 3850 is working as onboard,is named as "standard graphics adapter"

can any1 help me?

_____

intel core 2 duo @2.2ghz
2gb ddr2 ram
psu 600w arctic
gigabyte GA-946GMX-s2

** updated--> my 8500gt is not fully recognized--only the name( it says 14 mb ram)