http://msdn.microsoft.com/library/default.asp?url=/ library/en-us/w2kmsgs/1140.asp

Dalsi popis:
BAD_POOL_HEADER
This is, perhaps, the most obscure error message. In most cases, if you receive this error, it's related to the most recent change you've made on your system. Try undoing the change to get rid of the error.

V podstate pisou, ze je to zpusobeno posledni zmenou v systemu, a ze se mas vratit k posledni funkcni konfiguraci.