I keep geting this driver_irql_not_less_or_equal when ever i perform a clean install. I get the 0xd1 one or the 0xa one all with the same error msg whenever i try installing windows xp. So im thinking my ram could be damaged, but ive goten diferent types of these messeges. ive goten 0x000000D1, 0x0000000A 0x00000050 and 0x0000007e ext... Some have to do with acpi.sys. All depending on my computers setings, if i installed any additional drivers or if i dident install any. If anyone knows about these or how to solve them please help.

Try the link provided and scroll through for links to Microsoft KB articals in reference to the stop errors you are getting: http://www.kayodeok.btinternet.co.uk/favorites/kbasewinxp.htm#kbstop