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Message 1 of 3
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Error code 0x00000100

HP Recommended
HP All -in-one 100B
Microsoft Windows 7 (32-bit)

First I get a blue screen with an error message. Then 8 options that all lead to a black screen with the following error message. Your PC needs to restart. Error code 0x00000100. Parameters: 0x00000006, 0x00000003, 0x000000AC, 0x000008E0. (Restarting just leads to a blue screen with error message and then again  black screen). I never made a recovery CD. I can not get a new copy of windows 7 because the windows version came with the computer. I do have a sticker on the back with the windows registration. Since I don't think i am still in the guarentee period,  I am willing to buy a new version of windows, but I need to be sure first if that will solve the problem (since I don't really know what the problem is). Also, since the computer won't start anymore, how can I find out if it is a 32 or 64 bit? Thank you in advance.

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Message 2 of 3
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HP Recommended

Hi! @Danielle44,  Thanks for stopping by the HP Support Forums!


I understand you getting a black screen with error code 0x00000100 on your PC.


Don't worry I'll try to help you out.


Did you make any software or hardware changes on your PC?


Are you able to boot into BIOS on your PC?


Try few steps recommended below.


To perform a hard reset on a computer with a removable battery, use the following steps:
Turn off the computer.
Remove the computer from any port replicator or docking station.
Disconnect all external connected peripheral devices such as USB storage devices, external displays, and printers.
Unplug the AC adapter from the computer.
Remove the battery from the battery compartment.
Press and hold down the Power button for about 15 seconds to drain any residual electrical charge from the capacitors that protect the memory.
Insert the battery and plug the AC adapter back into the notebook computer, but do not connect any of the peripheral devices.
Press the Power button to turn on the computer.
If a startup menu opens, use the arrow keys to select Start Windows Normally, then press the Enter key.
After reconnecting each of the peripheral devices, run Windows Update and HP Support Assistant to update all device drivers. See Updating Drivers and Software with Windows Update (Windows 10, 😎 and Using HP Support Assistant (Windows 10, 8, 7) for more information.


Also, please find the reasons for the error code below-

  • Incorrectly configured, old, or corrupted device drivers. (very common)
  • Corruption in Windows registry from a recent software change (install or uninstall).
  • Virus or malware infection that has corrupted Windows system files or Windows Operating System-related program files.
  • Driver conflict after installing new hardware.
  • Damaged or removed system files after you’ve installed software or drivers related to the Windows Operating System.
  • Error 0x100 blue screen caused by a damaged hard disk.
  • LOADER_BLOCK_MISMATCH STOP error due to memory (RAM) corruption.

Try restoring the BIOS to default and check if it helps.


Turn on your PC keep tapping the F10 key, you will boot into BIOS.


From the main or file menu select restore defaults.


Select F10 to save changes and exit.


If the issue still persists try performing a system diagnostics on your PC and check if the hardware components on your PC are functioning correctly.


Refer this article to know more information about running system diagnostics on your PC. Click Here


Let me know if this works!

Have a wonderful day ahead! 🙂


Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!



I am an HP Employee

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Message 3 of 3
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From: AbT6 HP 100B All-in-One PC Specifications

the string '64' appears nowhere on the web-page, but the string '32' appears many times,

including the lines where it states that the 32-bit version of Windows 7 (Starter or Home or Professional) was installed at the HP factory.


You can try to download Windows 7:


You can try to download Windows 10:

When installing, and asked for the 25-character product-key, click "I do not have one".

The installer will finish, but you will have a "trial" version of Windows 10, that will work for a few days.

If your hardware is "bad", then the installer might crash, or the "trial" version might crash.

If your hardware is OK, then you can "wipe" Windows 10, and install Windows 7.



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