Getting an incorrect group header stop code 0x00000019 Blue screen error after Windows 10 update? Due to this BSOD error, Windows 10 freezes and reboots frequently? Don’t worry here, in this post we have different solutions to fix this problem. But before we start, let’s understand the problem, What causes the wrong group header in Windows 10?
On a Windows computer The Bad Pool Header error refers to your computer’s memory pool. If you see this error on your PC, it means that your machine is having trouble allocating enough memory to properly run an application, usually because the memory pool is corrupted. And the most common reasons for this Windows 10 blue screen error are driver malfunction, disk-related issues, software conflicts, and hardware failures. Whatever the reason here, we have different solutions that apply to fix “BAD POOL HEADER” error in Windows 10, 8.1 and 7.
On Windows computers, while the Boot / Start computer is seeing a Bootmgr missing error message, press ALT + CTRL + DEL to restart Windows. This Bootmgr missing error occurred mainly due to corrupted and misconfigured files, hard drive errors, bed sectors on the hard drive and operating system update, outdated BIOS, and damaged or loose hard drive interface cables are the possible reasons behind the Windows 10 missing in bootmgr . Also many experienced Windows 10 users, bootmgr does not have the Windows 10 error , it is caused by booting from a hard disk or flash drive that is not configured correctly. In other words, you are trying to boot from a non-bootable source.
The error means that your BIOS cannot find the startup file on your boot volume, causing you to be unable to boot the system normally. First let us know what is Bootmgr and how does it work. Bootmgr is the Windows boot sequence manager first introduced in Microsoft Vista. Replaces the NTLDR boot manager in earlier versions of Windows. Bootmgr reads the boot configuration data and displays the operating system selection menu. NTLDR, Operating System Terms. The main job of this Bootmgr is to control the boot volume, help you when a computer starts to load pre-installed windows.
Fix Bootmgr is missing in Windows 10
Windows Boot Manager o BOOTMGR is located on the boot volume of your computer’s operating system (mainly C: drive). Bootmgr controls the boot volume which helps start winload.exe when a computer starts loading pre-installed windows on the processor. In general, bootmgr is fully responsible for starting your computer’s operating system. Here are some working solutions for Fix Bootmgr Missing in Windows 10 Error .
Note: This fix works on all versions of Windows, including Windows 7, 8 and 8.1, Windows 10.
Delete all connected media
If you connect some external media like USB Drive, your BIOS can probably be loaded from the external device instead of the correct boot volume. So, delete all the media connected to your PC.
Check the boot order in BIOS
If after removing all connected media, BOOTMGR is not found, an error may still exist, then you need to check the boot order in BIOS. To do this, press Ctrl + Alt + Del to restart your computer. While the boot windows or manufacturer’s logo appears, keep pressing the dedicated key (commonly F12) to enter BIOS.
NOTE: The key to enter the BIOS can be F2, F8, F10, F12, Esc or Del, etc. If you are not sure, check with your computer manufacturer.
Here go to boot tab with left and right arrow key Now in boot tab use ↑ or ↓ key to highlight correct boot hard drive. Then use the + or – key to move your boot drive to the top to be the first boot device.
Run automatic repair
Windows has a built-in automatic repair tool that checks for and repairs all startup errors that are preventing Windows from starting normally. Before performing any troubleshooting steps, we recommend that you perform Startup Repair first. you can do this by following below.
First insert the Windows 10 bootable CD or DVD and restart your PC. Note: If you don’t have Windows Mendia to install, you can create one by following this procedure to create a bootable Windows USB / DVD
Now when you are prompted to press any key to boot from a CD or DVD, click any key on the keyboard. Next Select your language preferences and click Next. Click Repair your computer in the lower left corner.
This will restart Windows and on the next screen. Under Choose an option screen, click Troubleshoot and then click the Advanced option. This will display all the available tools as shown below.
Now click Startup Repair. This will restart Windows and start the repair process. During the repair process, this will check the following points.
- Missing / Corrupt / Incompatible Drivers
- Missing / Corrupt System Files
- Missing / Corrupt Boot Configuration Settings
- Corrupt registry settings
- Corrupt disk metadata (master boot record, partition table, or boot sector)
- Installing problematic updates
Wait for the Windows startup / automatic repairs to complete. After that, reboot and you have successfully fixed the BOOTMGR is missing error. Still getting the same error, go to the next step.
Make Windows partition active
An active partition is a partition on your computer’s hard drive known as a boot partition that actually contains your PC’s operating system. Normally, only one partition can be active at the moment as C: drive, mainly where our window is installed. But sometimes that partition became inactive due to some reasons. And Reactive partition can mainly fix most boot errors such as bootmgr is missing. Let’s see how to react
First you have to access Windows advanced boot options . Here you will get the option to Open Advanced Command. Quick. When the command prompt opens, type the following commands
This command will start the disk part utility at your command prompt. When diskpart starts, you will see a “DISKPART>” sign on the left side of your command prompt.
This will list all your connected drives on your computer.
select disk 0
Note: Select the hard drive where your window is installed. In my case, I am selecting Disk 0 because that is the only disk drive showing in my CMD and it is also where my operating system is installed.
This command will show you all partitions created on that disk from what you have selected.
select partition 2
Normally we are selecting partition 2 because that is our Windows partition, but that doesn’t prove that you will always have to select the second one because sometimes partition 1 can also be our Windows partition. So, select only that partition where your window is installed.
Note: Never select 100MB, 350MB, and 500MB partitions.
That will make your partition active.
Repair / fix boot files
After activating Windows partition, repairing damaged or missing boot file is the good experience to fix missing Bootmgr error on Windows 10 or Windows 7 computers. Also, your boot files may get corrupted by some updates Software, Virus or Windows / Software recently installed and it is better to repair it as soon as possible. you can do this fallow
Because this Bootmgr error cannot be started in Windows. Again, we need to open the command prompt via advanced boot option . Here on the Advanced startup screen, select the advanced command prompt when the command prompt appears, type the commands one by one, and hit the Enter key to run the command.
Get out of
Above command we performed to find out the installed Windows drive letter. Here make a note of the drive letter where Windows is installed. for me it is D drive. Now do the following commands to repair the bootmgr. (Note: Replace D with the installed drive letter from Windows.)
D: (your Windows drive letter)
Bootrec / fixmbr
Bootrec / fixboot
Bootrec / rebuildbcd
The above commands fix bootmgr errors. Now repair the hard drive for errors by running the following command.
Chkdsk / f / r Type this command and hit enterkey to repair hard drive and bed sector errors.
After completing the “chkdsk” command to 100%, just restart your computer, hopefully this time your windows start normally. If you still get the same error, go to the next step.
Windows Image Repair
After performing the above methods the problem is still not fixed, then repairing the Windows image can fix Windows startup issues including missing bootmgr. You can do this by following the first open command prompt and enter the following command:
DISM / Online / Cleanup Image / RestoreHealth
Press Enter to run the above command and wait for the process to complete, usually it takes 15-20 minutes.
NOTE: if the above command doesn’t work, try this: Dism / Image: C: offline / Cleanup-Image / RestoreHealth / Source: c: test mount windows
Dism / Online / Cleanup-Image / RestoreHealth / Source: c: test mount windows / LimitAccess
After the process is complete, restart your PC Check problem solved.
These are some of the best working solutions to fix boot error missing in Bootmgr on Windows 10, Windows 7 computer permanently. If you have any query suggestions, feel free to comment below.