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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
- HP Community
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- Notebook Operating System and Recovery
- Am experiencing this problem when i start my pc help.

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10-31-2019 05:27 AM
The operating system couldn't be loaded because a critical system driver is missing or contain error. Which is this below.
File:/windows/systey32/driver/ReFS.sys
Error code:0xc0000221
11-02-2019 12:54 PM
Since the OS is corrupted, I suggest you perform a Reset and that should work
You can refer to these Links.
Windows 10 Reset: https://support.hp.com/in-en/document/c04742289
Windows 10 Recovery Options: https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options
Keep me posted how it goes 😊
If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
KrazyToad
I Am An HP Employee