My old graphics card recently bit the dust so I decided to put in my new one (AMD Radeon HD 6450) and it only ever detects one monitor, they are both connected and worked perfectly fine with my old card and if I switch the cables one works and the other doesn't.
Am I doing something wrong?
More aboutdual monitor
did you uninstall the old GPU drivers and install fresh ones?
I'd like to say it worked, but it's still only detecting the one display