I would first pull the HDD to get the data off. I'm guessing it's an IDE drive. You can get a USB to IDE/SATA adapter fairly cheap. https://www.google.com/search?q=ide+to+usb+adapter+with+power or https://www.amazon.com/EYOOLD-USB-Converter-Adapter-Optical/dp/B073SB3PD4?th=1
I recommend a...