Windows 7 Problem on boot

[s34mu5]

Hi I recently put a new HTPC together, the specs are:


cpu - AMD Phenom II X2 Dual Core 555 3.20GHz Black Edition
http://www.overclockers.co.uk/showproduct.php?prodid=CP-265-AM

mobo - Gigabyte GA-880GM-UD2H AMD 880G (Socket AM3) microATX DDR3
http://www.overclockers.co.uk/showproduct.php?prodid=MB-278-GI

hdd - Samsung SpinPoint F4 EcoGreen 2TB SATA-II 32MB Cache
http://www.overclockers.co.uk/showproduct.php?prodid=HD-097-SA

ram - OCZ Gold 4GB (2x2GB) DDR3
http://www.overclockers.co.uk/showproduct.php?prodid=MY-183-OC

power - Corsair Builder Series CX 430W
https://www.overclockers.co.uk/showproduct.php?prodid=CA-059-CS

blu ray drive - Samsung SH-B123L/BSBP 12x BluRay ROM
http://www.overclockers.co.uk/showproduct.php?prodid=CD-140-SA



It is ouputting audio and video to a TV via HDMI
When I boot into windows 7, sometimes there is no audio and the resolution of the screen is strange. On the windows logo wallpaper the edges of the logo are jaggy. Once I reboot the sound works and the resolution is perfect.

Any ideas of what this could be? I'm pretty sure all my drivers are up to date

Thanks

 

[BigBoy]

most probably the Flaky on board Graphics of the UD2H I have the same board in two machines and had to upgrade the media machines GFX card to play good quality Movies via HDMI.