I was trying to repair my computer that will not boot after swapping cases. I believed that the boot drive was possibly in a different SATA port so was trying them all. I needed to remove the GPU to access something. I started it up without realising the GPU was still removed. I put it back in and now I can no longer see anything on the monitor at all. No BIOS screen or anything. I tried another GPU and it was the same. I also tried both DVI ports.
MSI 970 Gaming Motherboard
Sapphire HD 3870 GPU (both)
I was hoping to have this setup going today with the new case and GPU (I was still using the old one to uninstall the old drivers) but I'm just getting problem after problem. Help would be greatly appreciated.