Bad pool header BSOD error (Windows 10, 8 & 7)
What is error message ‘Bad pool header’ in Windows?
Bad pool header is a blue screen of death error that usually occurs when the pool header becomes corrupted. This error indicates problems with Windows memory allocation. It usually occurs after installing a new hardware or software, particularly an anti-virus that does not work with your computer.
Other possible reasons for the error include faulty driver and routers, bad sectors, and other disk write issues. The error may also manifest as “bad_pool_header”, “bad pool header error”, and “bad pool header BSOD”, to name a few. It may appear in Windows 7, 8, and 10.
How can you fix ‘Bad pool header’ in Windows?
Some of the solutions to this error include:
- Uninstalling newly-installed hardware or software
- Uninstalling security software
- Uninstalling the driver
- Testing hardware
- Reinstalling Windows
Please see our in-depth walk-through solutions below.
Solution 1. Uninstall newly install Software and Hardware
“Bad pool header” error may occur if Windows has detected an issue, which it requires to restart your PC. It could be caused by a recently installed application/ driver/ software or a newly installed hardware. It may also reveal that the newly installed hardware s defective or is not connected properly. Removing or uninstalling the recently installed software and hardware might fix the problem.
Regarding the software, install the compatible software for your Windows version. To check Windows version, access System information.
- Option 1: Click Windows Start and type into the Windows search bar “System Information” and press Enter key.
Option 2: Click Windows Logo key + R key then type msinfo32 and then press Enter key.
- Now, check OS name and System Type if the software you recently installed is compatible with your Windows.
- Replace it if it is not compatible.
Regarding the hardware, it is possible that the hardware driver is not updated or is incompatible with the Windows version (see solution 3 for more driver information). Also, as noted above the hardware might be the defective (see solution 4).
Solution 2. Uninstall Security Software
“Bad pool header” error could also occur due to your security software such as third-party anti-virus, VPN, and firewall. It could be messing with the Windows system. Uninstalling it may fix the problem.
However, even if you uninstall the security software the error may still occur sometimes. The reason for this is a remnant file, registry or DDL of the security software may be messing with your system. So you might need to run some tools to check after uninstalling the security software.
After uninstalling the security software run the following below.
Run Disk Clean Up
- Click Windows start then type in “Disk Cleanup” and then press Enter key.
- Click all checkbox, click Ok button and press Ok for the confirmation.
- This will clean all temporary files.
NOTE: Download it here.
- Run CCleaner.
- Click Registry.
- Check all checkbox.
- Click Scan for Issues. Wait until it is finished.
- Click Fix selected issues. Wait until it is finished.
- Then, restart your computer.
See if the error disappears.
Solution 3. Uninstall Driver
“Bad_pool_header” error may also be caused by a newly installed driver. The driver could be corrupt or incompatible with your hardware or Windows version. Uninstalling the driver might fix the issue.
Use the instructions below to access safe mode. In safe mode, drivers are disabled, therefore you can uninstall the newly installed driver and avoid “Bad_pool_header error” from interfering with the uninstallation process. Also, if your computer cannot access Windows desktop due to “Blue Screen Bad_pool_header”, you might have a chance booting in safe mode.
Option 1. For the lower version of Windows
- Restart your computer.
- Upon bootup, press F8 continuously until you access the Advanced Boot Options.
- Then, select Safe Mode.
Option 2. For Windows 10
Use Windows bootable device
- Insert the Windows installation CD/DVD or USB.
- A message will appear “Press any key to boot from CD or DVD”, press any key to boot from the Window installation CD/DVD or USB.
- Select your language, time and keyboard, and click “Next.”
- Click “Repair your computer.”
- Click “Troubleshoot ==> Advance Option ==>Start up Setting ==> Restart.”
- Select from Enable Safe mode or Safe mode.
- Now go to the Control Panel and select “Uninstall program.”
- Look for the newly installed driver, which caused BSOD and uninstall it.
- Restart your computer.
NOTE: Due to BSOD restart, Windows will direct you to Automatic repair window, to access Advance option, therefore you may skip steps 1 to 4. You could also hard press the power button on the computer until you access Automatic repair. (This is not advisable because it could damage your hardware.)
Solution 4. Test Hardware
“Bad_pool_header” error may also be caused by faulty or incompatible hardware. Check your hardware to determine which of the component is causing “Blue screen error code Bad_pool_header.” However, if the error occurs after you installed a new component, please remove it and check if it was the cause.
The first thing to do is to turn off the computer and unplug the computer from the power source and then follow the instructions below.
- Open the computer case.
- Remove all RAM stick and, clean the RAM gold pin using a pencil eraser and connect it again. Make sure that you push it down enough that the retention lever or the RAM slot locks.
- Detach graphics card and other components such as a printer and network adaptor.
- Reconnect hard drive. If you have multiple hard drives, do not connect the secondary hard drives only the hard drive with installed Windows on it.
- Reset your Motherboard BIOS by removing the CMOS battery and reconnect it after one minute.
- Clean your CPU fan from dust and make sure the CPU fan cable is connected to the motherboard properly.
- Test the PC, turn it on. Check if the CPU fan is working. If it is not, buy a new one. If good, proceed.
- If it proceeds to Windows Desktop turn it off again.
- Reconnect graphics card, secondary hard drive, and the other components. If the error occurs, your graphics card or add-on component might be the source of the BSOD. Reconnect it one by one and until you determine whos causing the problem.
- If the error persists, please proceed with the hardware test below.
HDD test using Check Disk
If you could not access the Windows desktop, follow Solution 1 on how to access Advance option, in it please select Command prompt. However, if you could, please type CMD in your Windows search, then right-click Command prompt and select Run as Administrator.
- In the Command prompt, type in chckdisk /r, then press Enter and wait until the process is finished.
- If you encounter any error report, such as the image above, consider replacing your HDD.
- If the HDD is in good condition, please see test your RAM.
For memory / RAM testing please see link here.
Solution 5. Reinstall Windows
If all the components are in good condition and “Bad_pool_header” error persists, please reinstall your Windows. If you encounter bad sector in the hard disk test from the Solution 3 and decide to replace the hard disk, please be guided by the instructions below on how to install Windows.
- Insert the Windows installation DVD or USB.
- A message will appear “Press any key to boot from CD or DVD”, press any key to boot from the Windows installation CD/DVD or USB.
- Select your language, time and keyboard, and click Next.
- Click Install Now.
- Click I accept the terms of the license, and then click Next.
- Click Custom (Advanced).
- Select the partition, and click Delete.
NOTE: Delete all partition.
- Select the Unallocated space and click Next.
NOTE: If you want to define the size, click new, set the size and then click Apply.
- Click ok to confirm.
- Wait until the installation process is finished.