Hello I just joined to request the help of the expert folks here. I am unable to complete the installation of W7 Ultimate 64 bit full retail version on my newly assembled PC. All of the hardware (listed below) is new. I have not been successful with any of the suggestions that I have located thus far. Gigabyte P55A-UD5 m/b i7 860 4x2GB DDR3 1066 Zalman 750W psu Gigabyte 512MB Nvidia 9800 GT 2x 1TB WD Caviar Black S-ATA HDD (on Channel 0 & 1) BIOS set to IDE mode Panasonic S-ATA DVD I am attempting a clean install using the custom option booted from the Win 7 disc. Install proceeds normally past file copying and expanding. On reboot I get the Starting windows screen then I get a recovery screen saying that Windows didn't start normally which I cannot get past. Safe Mode won't allow me to proceed. Here's what I've tried so far. Reboot from DVD and run repair 'could not automatically repair' Deleting the chosen partition made from my selected HDD (leaving separate system partition of 100MB) and starting again. Deleting both and starting again including making new maximum size drive and running format. Mem test on all 8GB Using the VGA out and an older CRT Disabling almost all peripheral devices on the m/b (although I haven't tried disabling the LAN controllers) Installed the video card in another PC with W7 Home Premium. I suspected the older video card (this PC is purely for Photoshop not games) may be an issue however it functioned fine during an upgrade from Vista to W7 Home Premium in another machine as does now a 1GB version of the same card. Any assistance will be greatly appreciated and of course please let me know if I have been unclear or left out relevant information.