Tepid, in answer to your question, the system spec is an MSI 790 FX-GD70 mobo, AMD Phenom II 955 BE processor, 8GB 1066 ram, OCZ 64GB SSD main drive with a pair of WD 640GB conventional HD's. There is also a pair of LG Blu-Ray drives. All are brand new. Once Windows is up and running I have no problems with anything else. All the USB ports run fine, everything else runs fine. The message appears after the MoBo bios screen before Windows starts to install. I will get the text and post it at some point (just got back from Hols and am trying to catch up !). 'texture DnB' in answer to your comment, no USB is not on the boot sequence. The SSD drive which has Windows 7 installed on it is number 1 boot choice followed by the 2 WD HD's then the 2 LG drives.