Sold computer without erasing hard drive, risks?

I sold my Toshiba laptop to some guy on Craigslist and he told me he would sell the computer for parts and erase the hard drive. The computer had a broken motherboard so it wouldn't start and I couldn't erase the hard drive unless I took it out and connected it to another computer. What risks am I taking... show more I sold my Toshiba laptop to some guy on Craigslist and he told me he would sell the computer for parts and erase the hard drive. The computer had a broken motherboard so it wouldn't start and I couldn't erase the hard drive unless I took it out and connected it to another computer. What risks am I taking with this transaction. I wish I thought of this earlier.
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