Hi there countessjaye,
Most probably, the laptop would not boot. Of course, you can insert the HDD and try it.
I believe you will need to perform a clean OS installation. Yet, first, you will need to recover your data. You can do so if you attach the drive to a working computer, as a secondary one. You will need either a SATA to USB adapter, so you can attach it externally or power & SATA cables, so you can attach it internally.
Also, it may be a good idea to contact the manufacturer's Support on the OS installation matter. Do you have an OS CD?