So i currently have a 5670 and i ordered a 6850 which just got here. Instead of writing a big paragraph which makes it hard to get the course of action, i will list the steps i took as well as what happened in "bullet" point style:
-remove the 5670 (didnt remove the drivers or anything, was just too excited)
-connect the 6850 as well as the 6-pin power connector
-power on PC, i get to login screen and everything looks big as when you are in low resolution, i thought i will just raise the resolution etc, no big deal.
-login and get a windows message saying "display drivers not installed or not functioning"
-i pop in the CD that came with the 6850 and install Catalyst (even though i had it installed with the 5670). Setup finishes correctly and i get a message i need to reboot.
-get to login, put password and hit enter. Screen goes black for a good 15-20 seconds and then get a blue screen saying something went wrong with display driver and it is shutting off so hardware doesnt get damaged. This is as much as i can read because the blue screen goes away quick. This is when i realized i should of uninstalled the 5670 drivers and Catalyst etc. This is also when i started freaking out thinking i may have messed up something...
-remove the 6850, put back the 5670 and everything is fine, i get to windows perfectly etc. I go to device manager and uninstall the 5670 that shows up under "display adapters". Then go to Control Panel and uninstall Catalyst.
-remove 5670 and pop back in the 6850. Login screen again as if low resolution, i login and get the same message about drivers. Basically the same as before, install Catalyst and reboot.
-and then everything the same, login screen shows up, when i login it immediately goes to black screen (never see windows desktop) and then the blue screen.
I have no idea whats going on and dont know how to diagnose it, less fix it. My happiness of receiving the 6850 has been crushed.
I will really appreciate any help PLEASE!
Current system:
Intel i7 2600
Radeon 5670
8GB RAM
Windows 7 Home Premium