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Blue screen comes after windows XP?


when i start up my computer is says start in safe mode or normal mode. it doesn't matter which one is choose cause a blue screens comes up after windows XP. the screen says BAD_POOL_CALLER. then it tells me to start in safe mode and disable the caching or shadowing. I dont know how to do that. It also says that i might need driver updates and bios updates and maybe not enough adequate disk space. What does this mean>? Can you help me fix my tower?


This question was answered on March 9, 2005. Much of the information contained herein may have changed since posting.

Stop Error When You Upgrade from Windows 2000: Bad_Pool_Caller 0xC2

Article ID : 310527

Last Review : November 4, 2003

Revision : 1.0

This article was previously published under Q310527

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When you upgrade your Compaq Professional Workstation AP550 computer from Microsoft Windows 2000 Professional to Windows XP, either of the following symptoms may occur: " If you click Yes, download the updated Setup files (Recommended) in the Get Updated Setup Files dialog box during Setup, you receive the following message in the Report System Compatibility dialog box:

The following items are not compatible with Windows XP The compatibility issue with some of these items must be resolved before running Setup again.

For more information about an item, select it, and then click Details.

Winnov Videum Software

Clicking Details causes the following message to appear:

This software is not compatible with this version of Windows and must be uninstalled before upgrading.

For a list of devices and applications supported by this version of Windows, see the list of compatible hardware and software on the Microsoft Web site

" If you click No, skip this step and continue installing Windows in the Get Updated Setup Files dialog box during Setup, you receive the following error message on a blue screen:




This problem can occur if the computer contains a Winnov Videum AVI video capture adapter with the Videum software version 2.9.2 installed (this software includes the Winnov32.sys version 200.9.2812 file)


If you clicked Yes, download the updated Setup files (Recommended) in the Get Updated Setup Files dialog box during Setup, remove the Winnov Videum software by using the Add/Remove Programs tool in Control Panel, and then install Windows XP again.

If you clicked No, skip this step and continue installing Windows in the Get Updated Setup Files dialog box during Setup, follow these steps: 1 Start your computer to a command prompt

If your computer uses the FAT file system, start your computer with a Microsoft Windows 95, Microsoft Windows 98, or Microsoft Windows Millennium Edition startup disk If your computer uses the NTFS file system, start your computer by using Recovery Console

2 Delete the Winnov32.sys, Wnvkaud.sys, Wnvcom.sys, and Wnkvid.sys files in the %Windir%\System32\Drivers folder

3 Restart the computer from the hard disk

4 Click Continue Windows XP Setup

An update for this problem is now installed via the Dynamic Update feature of Windows XP For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

311220 Description of the Dynamic Update Feature in Windows XP Setup

"Stop 0x000000C2 BAD_POOL_CALLER" error message in Windows Server 2003

Article ID : 888431

Last Review : December 22, 2004

Revision : 1.0

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On your Microsoft Windows Server 2003-based computer, you may receive the following Stop error message:

STOP 0x000000C2 BAD_POOL_CALLER (0x00000044, 0x00000000, 0x80000000, 0x00000000)

Note The Stop error occurs in the Ntoskrnl.exe file This problem may occur when the computer starts or while the computer is running normally.


This problem may occur if the AppCompat cache tries to free a cache entry with a null file name.


Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article Only apply it to systems that are experiencing this specific problem This hotfix may receive additional testing Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:;[LN];CNTACTMS

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


No prerequisites are required.

Restart requirement

You must restart your computer after you apply this hotfix.

Note When you apply this hotfix, the Ntoskrnl.exe file is updated You must restart your computer for the new file to take effect.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table The dates and times for these files are listed in coordinated universal time (UTC) When you view the file information, it is converted to local time To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel

Windows Server 2003, 32-bit editions

Date Time Version Size File name


11-Nov-2004 14:51 5.2.3790.231 2,407,936 Ntkrnlmp.exe

11-Nov-2004 02:09 5.2.3790.231 2,064,896 Ntkrnlpa.exe

11-Nov-2004 02:09 5.2.3790.231 2,109,952 Ntkrpamp.exe

11-Nov-2004 14:55 5.2.3790.231 2,208,256 Ntoskrnl.exe

Windows Server 2003, Enterprise Edition for Itanium-based Systems

Date Time Version Size File name


11-Nov-2004 14:46 5.2.3790.231 5,606,400 Ntkrnlmp.exe

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Posted by Eramilde of Katharine Gibbs School - New York on March 9, 2005