Random BSODs. Seems to be ntoskrnl.exe+7e569.

My grandmother has bought a HP p2-1113w with windows 7 home premium x64. It's only a few months old and has crashed 8+ times with the same error, IRQL_NOT_LESS_OR_EQUAL indicating ntoskrnl.exe+7e569 I'm using the computer to teach my grandmother how to use the internet, make word documents, etc. No games (she doesn't even know how to play minesweeper) and the only videos she watches are...