Sounds like a crappy Pawnshop. Depending on the pawnshop, it might be stolen.
When i hocked my computer, they made me boot it up and checked everything. However, I did a loan on it, but either way they should have checked this, I would return it, and next time check the computer before you buy it.
I wouldn't by a guitar from a pawnshop unless I tried it, neither would i with a computer.