I have no idea what's causing this. I just got my new Powercolor 7870 Myst back after I RMA'd it for this exact same issue. Windows won't boot, didn't even reach the BIOS when I put in the 7870 but the fan on the 7870 is running. When I put back my 550 TI it boots.
I already uninstalled the Nvidia drivers using a cleaner tool and installed AMD ones. When I got this card from the store, the staff tested it and it booted up but now on my rig it doesn't. BTW I checked the compatibility and my rig is fully compatible with this card. I'm using W7 64 bit. I tried safe mode with the 7870 on but it still won't boot.
It turns out I didn't successfully install the AMD drivers cause it couldn't detect an AMD card for the driver. How am I supposed to install the drivers when I can't even boot it when the 7870 is attached?
i5-3450 3.1ghz,
8GB RAM,
Seasonic S12ii 620W,
MSI H61M-P31 (G3) Mobo
What could be the problem?
I already uninstalled the Nvidia drivers using a cleaner tool and installed AMD ones. When I got this card from the store, the staff tested it and it booted up but now on my rig it doesn't. BTW I checked the compatibility and my rig is fully compatible with this card. I'm using W7 64 bit. I tried safe mode with the 7870 on but it still won't boot.
It turns out I didn't successfully install the AMD drivers cause it couldn't detect an AMD card for the driver. How am I supposed to install the drivers when I can't even boot it when the 7870 is attached?
i5-3450 3.1ghz,
8GB RAM,
Seasonic S12ii 620W,
MSI H61M-P31 (G3) Mobo
What could be the problem?