Original Post, some relevant details maybe...
 Most immediate problem:
Blue screen: I am unable to reboot; battery is not removable - this will solve itself eventually when the battery runs down - but is there any other way of forcing it?
(I've put the screen on maximum brightness to speed up that process.)I did try:
# pressed power button - no response; tried it for a few seconds, nothing
# tried Ctrl+Alt+Del a few times - nothing
# the machine does not seem to have any reset button[/edit]
 Immediate background:
I was trying to start the machine with Hirens boot USB stick, selected the mini XP option.
0x000000A5 (0x00000003, 0x8BE651D4, 0xC0140008, 0x494E495F)
According to MS the solution is to delete Hyberfile.sys
|If the problem persists, start the computer by using the Windows CD or by using an emergency startup disk, and then delete the Hiberfil.sys file.|
So, if/when I can reboot, I plan to try with Hirens Linux option and delete that file (and if I'm lucky 'normal' windows will start again - but that's for another post).
Any suggestions welcome - will let you know how I get on anyways ;-)
EDIT// corrected th error code