issues

[03HDFATBOY]

I'm running a DFI LanParty UT P45-T2RS and I cant use my ASUS Radeon HD 3870X2. Was told on DFI board they are incompatable.
If I install it. My PC will boot but no video. It's like my monitor is disconnected. Any sugestions? If I can't get it to work I'm going to put it on e-bay

[Hardwood]

As a content user of the same gpu, the only thing I can think of is, is it connected to the dvi closest to the mobo?

Not that ASUS' first level of support is much good, but did you run this issue by them?
Sorry, can't be much help.