Uz se to tu resilo bude to s driverama.
http://pc.poradna.net/q/view/460921-win-7-64bit-cr iticka-chyba-kernel-power?page=r461018#r461018
Tohle je ze stranek MS:

Stop error message on a Windows XP-based computer: "STOP 0x000000D1"

On a Microsoft Windows XP-based computer that is using certain network adapter drivers and certain host firewall software, you may receive a Stop 0xD1 error message that resembles the following:

STOP 0x000000D1(parameter1, parameter2, parameter3, parameter4)
DRIVER_IRQL_NOT_LESS_OR_EQUAL

HTTP.SYS

Note: In this message, the parameters that are represented by parameter1, parameter2, and parameter3 may vary.