I installed win 7 Pro on a new build: Gigabyte GA-P55-UD7 + i7875 + 8Gb Crucial DDR3. Made system backup and created System Repair Disk. A few days later (and a few backups later as various software loads were made) the system crashed while I was attempting to email photos from Picasa via its link to Outlook 2007. Screen went blank and on restart neither normal nor repair start worked (latter recycled to POST continuously). So, got out the repair disk, made by this system earlier - and after keyboard choice it tells me that the "repair disc created by win 7 64 bit not compatible with this system". "Scream!!!!!!!!!!!!!!!" 'Memtest' gives clean report. Any help or ideas? Thanks, Ian.