Morning all! Another request for assistance with one of the witchcraft-imbued systems I appear to be skilled at putting together... Have a backup machine with a P5K Deluxe and a QX6700 with the hard disk removed (all previously working). Needed to use it so added a Crucial MX500 disk for a fresh install, stuck the Windows USB in the back panel, faffed about trying to get the right monitor lead in, at which point the Windows installation screen appeared. SSD not listed for install though. Rebooted, checked BIOS, disk recognised, changed to AHCI, rebooted, "drive not installed or media missing". No amount of boot device selection works, boot from USB option not listed in BIOS (don't know if it was before), CDs not recognised in drive (including retail originals), BIOS reset but no change. Managed to get a Win 8 disc to get past the logo but then it stops with a STOP error code regarding "this usually happens when removable media has changed" or something similar. Note this wasn't a BSOD, just an error message on the Win 8 turquoise pre-installation screen. Even tried sneakily swapping the Win 7 disc into the drive to see if it took over but it didn't. I have no idea why a) the original installation screen appeared instead of options or errors when booting from USB, b) why select discs are now not recognised, c) why hardware is now not recognised/erroneous or d) why booting from USB worked once but is now not an option in either BIOS or boot selection menu. Mayday!