bad_pool_header is related to your wireless card. disabling it or installing the latest driver or rolling back to the previous should fix it.
Bsod containing ati.sys or nv and sys in it, related to your video cards.
How to fix the UNMOUNTABLE_BOOT_VOLUME error.
MS post that 80, 40 pin things to waste people time. for one your bios will alert you if that happen and second, it would have never boot right in the first place.
UNMOUNTABLE_BOOT_VOLUME is corrupted file and or bad sectors on your hard disc
Use Spinrite 6.0.
GRC*|*Hard drive data recovery software**
I fix this error all of the time with it. spinrite tries to recover the bad sectors or jacked up data and if they can't they moved the data from that sector and then hide that sector from being accessed
now if spinrite takes a long time to run and you have a fast computer, you might want to buy another hdd and clone it over to there because the hdd sectors are badly damaged in that case. I fixed at least 50-100 computers this way. I had 2 instance where the hdd was to badly damage for spinrite to fix