i would say, google and find old amd driver with 2.1 sdk, not sure if cgminer can detect old driver. had trouble using it with ati 4850 lol
it gave me errors like some file not found (forgot file name, but i gave up long time), was annoying, wasted too much time figuring what the hell is missing.
all instructions on web show they are using 5xxx and up
but miners like phoenix do work with my 4850, but i cant connect to btc guild, slush, but in old days it was working, now it dont work on those 2 mining pool
, but i can connect to other mining pool.
maybe some 1 shed light on my cgminer problem? i tried it with new drivers and sdk , still didnt work as i remember, all was fresh install.