BAD_POOL_HEADERHighBad pool header in Windows
What this error means
BAD_POOL_HEADER is a Windows stop code that usually appears when the system detects a problem with memory handling. In plain terms, something on your PC may be using memory incorrectly, and Windows stops to avoid damage. It often shows up during startup, while opening apps, or after installing new hardware, drivers, or updates.
Common causes
- 1A faulty or incompatible driver
- 2Recently added hardware or memory problems
- 3Corrupted Windows system files
- 4Malware or software that interferes with system memory
- 5Disk or storage issues that affect Windows files
How to fix it
- Restart your PC once and see whether the message returns. If it happened only once, it may have been a temporary glitch.
- Remove any recently connected accessories or hardware, such as a new printer, USB device, external drive, or added memory, then try starting Windows again.
- Start Windows in Safe Mode so only essential components load. If the problem stops there, a driver or app is likely involved.
- Update Windows and then update your device drivers, especially graphics, network, storage, and chipset drivers from your PC maker or hardware manufacturer.
- Open Quickfix AI and run a system scan, then use the option to check and repair Windows system files if it is offered. This can fix damaged files that trigger this stop code.
- Scan your PC for malware with Microsoft Defender or another trusted security tool. Avoid unknown repair tools that promise a quick fix.
- If the issue began after new RAM or another internal part was installed, have the hardware reseated or tested by a qualified technician. Do not keep forcing the PC to boot if it repeatedly crashes.
Recommended fixes
Run a Quickfix scan
- Open Quickfix AI and click Start scan.
- Choose the Quick or Advanced profile and let the scan finish.
- Review the highlighted issues and apply the recommended fixes.
Restart your device
A restart clears temporary state that often causes transient errors.
- Save your work and close open apps.
- Restart the device from the power menu.
- Reproduce the issue to check whether it persists.
Install Windows updates
- Open Settings > Windows Update.
- Click Check for updates and install everything available.
- Restart if prompted.
Boot into Safe Mode (Windows)
- Open Settings > System > Recovery and click Restart now under Advanced startup.
- Go to Troubleshoot > Advanced options > Startup Settings > Restart.
- Press 4 (or 5 for Safe Mode with Networking).
Update your drivers (Windows)
- Open Device Manager.
- Right-click the affected device and choose Update driver.
- Select Search automatically for drivers.
Scan for malware (Windows)
- Open Windows Security > Virus & threat protection.
- Run a Full scan.
- Quarantine or remove anything detected, then restart.
When to seek help
Seek professional help if BAD_POOL_HEADER keeps happening, Windows will not start normally, or the crash started after a hardware upgrade and continues after you remove external devices and update drivers. You should also get help sooner if you hear unusual beeps, see repeated restart loops, or suspect failing memory or storage hardware.
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