hey guys.
please help.
i got an engineering sample of 4870x2
the only driver that i managed to install is the one that I got with the videocard, but
its SO buggy that it renders the gpu practically unusable. (driver ver. 8.54-080811n-021649E-ATI)
when i tried to install sampleHD4800X2VISTA8-52-2 (normal 8.52) that is linked in this thread, installation worked perfectly,
but upon reboot, computer is not recognizing driver.
device manager states : "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)"
also the driver is _not_ digitall signed.
can that be the reason, or is it because I have an engineering sample?
please help(

gpu-z taken on 8.54 -
I've uploaded bios, someone told me that bios was patched and control sum is off. how bad is that? (noobish question, but please bear with me)
link to dumped bios - http://maxsteep.googlepages.com/R700.bin