(I had never heard of this version.) Upon checking the BIOS settings, I discovered that the OS had been installed in RAID/ATA mode, not RAID/AHCI mode, and the only good way to change this was to reinstall the OS. It had Windows 7 Professional 圆4 SP1 installed and a product key sticker on the case for Windows 7 Pro for Refurb PCs.
I recently had to reinstall Windows on a Dell desktop that I bought from a refurbisher.
