Had someone bring in a Fujitsu Lifebook P series "laptop" that has no operating system. She said "...the guy that had it before erased the windows when we bought it". Windows sticker on the bottom is for WinXP tablet edition. It has no CD/DVD drive. It's got a slot for an sdcard, 2 USBs and an empty expansion slot on the opposite side. The hard drive won't doesn't fit any of the adapters we have, so I can't put it in another machine and install that way. Is using a USB external CD drive my only/best option?