01-20-2020 02:55 AM
I bought an HP all in one for my daughter's 7 days ago. The computer was on sale because the warranty had run out. I set it up and installed all the updates, security, etc. I hadnt had a chance to mess with the comp yet so all that was additionally added was roblox. My youngest daughter had said there was an issue and i see the screen is black and will play sound but i couldn't get the picture to return so i had to reset with the button. While loading it showed a stop error: memory management. The computer went through the process of restarting to fix itself and the 2nd time there was a new stop error: 0xc000021a. The system attempts to repair itself but says its unsuccessful and keeps going through this loop. I did not set up a recovery point and ive tried resetting the comp to factory but it starts the process and says changes cannot be made. Ive run extensive systems tests and the system as a whole passes and every individual piece passes except for Hard Drive Optimized DST which says not available.
01-22-2020 05:22 PM
Welcome to HP support community.
A Clean Boot will allow you to troubleshoot the 0xC000021A error in-depth.
- Boot into your system
- Go to Desktop and click Start
- Press the Windows and R keys to open the Run utility
- Type msconfig
- Press Enter
- Go to the General tab, at the System Configuration window
- Click Selective startup
- Uncheck Load startup items
- Go to Services tab
- Check Hide all Microsoft services
- Click Disable all from the bottom right
- Go to Startup tab
- Disable all services listed there by doing: right-click on each and then click Disable
- Restart the computer.
Uninstall software or drivers
- Restart the computer and press the F8 key before the Windows 8 logo appears. If the F8 key doesn’t work, try the F11 key.
- Click Troubleshoot > Advanced Options > Startup Settings > Restart
- Press the F4 key to boot into Safe Mode
If you have the original disc, you can use it to boot into Safe Mode:
- Insert the disc and reboot the system
- Press any key to boot from the media
- Click Repair your computer
- Click Troubleshoot, then Advanced Options, then Startup Settings, then Restart
- Press F4 to boot into Safe Mode.
You can refer this HP document for more assistance:- Click here
I hope that helps.
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