Vista WMC Full Screen Black Screen Blinks

Hi, I had a XP Media Center PC running with the following specification:

• Dual 22" LCD one on DVI and one on RGB
• ATI Radeon X300/X550
• Hauppauge WinTV Dual Tuner
• Windows Vista Ultimate RTM build
• Screen resolution at 1680 x 1050

Until it was running with xp media center, there was no problem with full screen/regular size or whatever resolution I use. But since I installed Vista Ultimate on this system, Media Center works in ONLY regular size. If I make it full screen, it turns black with blinks.

Any help would be appreciated.

Even I’m getting same problem with Vista and Media Center. In my case whenever I get the black screen directly when launching Media Center and there use to be little blue rectangle which expands asking me which kind of setting I need to do. I strongly suspect it is related to my Video Card. But on other hand I have seen many Vista users facing this problem. So, if you are listening Microsoft, please do something for this problem.