My wife has a Toshiba Satellite M105-S3084 from about 2006 with 32 bit architecture. Last year the drive began malfunctioning & finally died. Recently we bought a new drive & installed it. Her restore CD is long gone John & the Toshiba won't support Win 7 so I used an old XP disk I have. I'd had it on an older PC that died. It began installation but rejected the Key. In researching online I discovered this disk is an OEM so it cannot be reused. I even tried an older version of Windows but the laptop boots into XP and stalls at the Key authentication each try. I am wondering if I'm able to purchase a full retail version of XP, will the new Key for that OS be accepted in order to continue installation? If not, how can I erase the partial installation?