Issue with Asus P5AD2-E Premium and PATA

When I plug in any PATA device, hard drives, cd/dvd drives, I no longer get video. If I unplug them then I get video.

I'm using a P4 3.6GHz (560?). 1 gig of Corsair DDR2 675Mhz mem. A ATI x700 gfx, and a Antec Smart 400 watt PSU. I can boot into the bios fine with no PATA devices attached. Sadly though I have a PATA hdd to be used, pulled from previous computer that died to PSU failure. I was planning on just doing a repair install with Windows. I've tried all the different jumpers settings on the devices. Master/slave combo's. Single drives, and also Cable Select. I forgot about all that at first, been using SATA too long .

Any help would be appreciated.

Well Its either the PCI-E slot/NB or the Graphics card was bad. Put in an Old Geforce 2 MX400 PCI card and it works fine now.

How about power consumption? Maybe your PSU is to the limits?
Try starting up your PC with the 4pin molex attached to the PATA device, but without the IDE/PATA datacable. And ofcourse your ATI gfx-card inserted.