I hooked up an IC Powerhouse 19" LCD monitor to my dual boot PC. It works fine with Vista Ultimate 64 Bit. When booting to XP Pro 64 Bit, it goes as far as the XP boot screen and then when it blinks to what should be the desk top, it stays black and a window appears saying no support. In safe mode, it works fine. This is a new one on me. My video card is a 256MB ATI Radeon 9550. CPU is 3700+ 64X2 with 4GB RAM. I am using two HDD's, one for each OS. My other monitors all work fine, both CRT and LCD. This is weird. Any ideas?