BSOD bad pool header?

[kmufc77]

hi all i have just got a BSOD saying i have a bad pool header can anyone shead some light on what this is and how to fix please

 

[kmufc77]

done a bit of reading on google and most ppl with this problem are saying its a driver related problem? i have installed nvdia 175.19 over another driver without using driver cleaner last night, have also just upgraded to the 2009 kaspersky