The recovery disk from neosmart simply restores the boot records so you can boot into a working Windows Vista. It sounds like you’re Windows installation is broken. You need to contact the manufacturer which in this case is HP and see what your options are. You may have a hidden partition on the hard drive from which you can try to restore or you may need to get the CDs or DVDs from the manufacturer.
If the machine is overheating and shutting down you may need to temporarily place the laptop on one of those laptop notebook coolers or seek professional help for getting the laptop cleaned regarding its internal fans and such.
Thermaltake Massive23 LX Laptop Notebook Cooler Oversized 230mm Blue LED Fan USB CLN0015
Antec® Laptop Cooler