Help me replace my dead 5-years-old computer.

Hi, I'm Gi and I'm currently a student pursuing a degree in engineering and unfortunately, my computer has died. I use computer for the sole purpose of using engineering-related-software such as computer-aided design software (CAD).

Unluckily, I've got a lot of student debt to pay up for my college tuition fee and got no ways to get a new or even a used computer for my school. I hope that you could help me even with a dollar. Thanks a lot!