The message itself will often point to the specific problem driver.
Read this - Bug Check 0xA: IRQL_NOT_LESS_OR_EQUAL
Also this http://msdn.microsoft.com/library/default.asp?url=/library/en-us/w2kmsgs/6077.asp
And this one too (especially the troubleshooting portion toward the end for 0x0A Stops AFTER XP is installed as yours is.
I have an intermittent problem with WinXPHome/SP2 on a 1-year old Sony.
Bootup begins, the wallpaper on the desktop appears, then it goes to blue screen with a dire error message that includes:
Begin dump of physical memory
Physical memory dump complete
When I "report" this to Windows and investigate their site, it says it's a driver problem... But why only sometimes? Usually, I just re-boot and everything's fine, sometimes it takes twice and I unplug any USB cables in the front. But what happens the day it WON'T reboot???