Hi,

The PC has XP SP3 with all updates. It has a Pentium Allendale dual CPU.
This BS comes up every time the PC boots, unless I choose "last known good configuration" (sometimes this option has to be selected several times before a successful boot):
STOP: C0000221 Unknown Hard Error \SystemRoot\System32\ntdll.dll


A bad MBR is detected when doing a FIXMBR. The boot after fixing the MBR is successful on the second boot attempt . FIXMBR then finds the MBR again bad the next time it's run.

A minidump was created several weeks ago, but none since, despite multiple daily BSODs.



A comparison of ntbtlog.txt files for successful and failed boots shows that good boots load ntkrnlpa.exe and then later intelppm.sys
is loaded. Bad boots load ntoskrnl.exe and the first driver not loaded is ACPI Multiprocessor PC.

If a restore point is created after a successful boot, the next time the PC is started it will usually BS with same error.

Any help will be appreciated,

Thanks!

Hi Lara

Welcome to PC Help Forum I hope you enjoy your time here with us.

Could you please post your BSOD Logs,this will enable your resident BSOD expert to Annalise your logs.To ensure the accuracy of the results, attach the latest file possible, and attach at least two of them.

IF you are unsure how to do this,Please click on BSOD in my signature and follow the instructions


Regards,

airman24...

Hi,

Having trouble uploading the minidump file.
Selecting 'Manage Attachments' does not open another window. Popups are not blocked in my FireFox browser.

Thanks,

Using IE instead of FireFox seems to work

Tried the control key with no joy. There seem to be a few problems with the FF installation. The IE upload was successful, though.

Hi,

I had 3 or 4 blue screens this morning, but no minidump file is shown in the minidump folder after I moved the one which I posted to my desktop.

Thanks

I just added the /pae switch to boot.ini and it booted correctly. Not sure that this will be a permanent fix.

This morning the BS reappeared on first boot. Second boot was successful without choosing Last Good Configuration.

Hello Lara

I would like to ask if you could please refer to post 2 for instructions,this would aid our BSOD expert into assisting you further and offering further advice..

Regards,

airman24.

Did a FIXMBR to see if that would eliminate the first boot BS, but it didn't.The second boot was again successful.

Hi,

Sorry, there are no additional, more current, minidump files.

Lara

Hello Lara

Madmonkey is not on-line at present but I`m sure he will be with you on his return.

Regards,

airman24..