Make yourself a bootable CD.
If it's just the Win7 gone bad or the hard disk failing, the rest of the laptop could be OK.
You can download and burn a complete OS on a CD (or USB thumb drive).
Use F12 a power on and choose CD (or USB if using thumb drive).
For CD use the Try It option and not the install option.
It's not Windows - but all you want to know is that the rest of the hardware (besides the HDD) is still OK.