Compaq 8510p with Vista business. Recenly it shows a BSOD on
shutdown. The Mem dump says "no more system PTEs" caused by
ntkrnlpa.exe. This also happens in safe mode.

I changed the Registry value of SystemPages to maximum. Still no Good.
If I reduce the RAM to only 1G, it shuts down OK

The laptop has 2 slots. This is what happens:

1G no BSOD
1g+2G BSOD
2G BSOD
2G+2G BSOD

Any clue??

Thanks

ABC