Thinkpads Forum

Last week when I fired up SW Installer there were like ten new updates. I installed them all but since then whenever I shutdown my system I always get a blue screen "bad pool caller" (according to help this signals that some driver tries to deallocate some already deallocated memory again).

I noticed, that when I log out first and then shut down, things work fine, only when I shutdown directly (i.e. while still logged in) I get an almost immediate BSOD.

Any hints, how to diagnose this or find out, which driver may be causing this? I tried to debug (using DrWatson and Visual Studio) the .dmp file that is generated, but all I ever managed to get is the deassembly of the code and that didn't tell me anything. What I would need is the commandline that started the process or at least the origin (.dll or .exe file or whatever) where the code stems from, so that I can deduct from that which application or driver this code belongs to.

Michael

You might look in Event Viewer. Go to Start > Control Panel > Administrative Tools > Event Viewer. Also take a look at C:\WINDOWS\Debug\UserMode\userenv.log.

If you can't find the problem, try Windows System Restore to restore your software environment as it was before the updates. I recommend running System Restore from safe mode, but other users have success running in normal mode.

Hi,

I had the same problem this week with my new T60p. Thought it would make sense to have it on the latest level. It cost me about one day to bring the computer on the level I need.

The lesson I learned is:
Never change a running system, driver updates only if You have problems.