Hey gents, haven't posted here in a while, but in need of some Guru guidance. My computer doesn't seem to like booting from my SSD drive unless it is 2nd in the boot order. I get the message "no operating system found. Press Ctrl + Alt + Del to reboot". Here are some scenarios: 1) When the SSD is the only drive connected to the mobo, I get the message above and won't boot. 2) When 2 or more drives are connected and the SSD is first in the boot sequence, I get the message above and Windows won't boot. 3) when 2 or more drives are connected and the SSD is 2nd in the boot order (after the 320 GB drive), the PC will show 2 Windows 7 installations and the default option will allow me to boot to Windows on the SSD. Very weird, see my system below, I added a 120GB SSD to my rig: i7 750 / P55-UD4 320GB HDD / 500GB HDD / 2TB HDD I previously had Windows 7 installed on the 320GB drive but after installing on the SSD I formatted that drive, effectively removing everything so there is only 1 installation of Windows. Anyone have any ideas?