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7 Ways to Fix the L1c63x64.sys BSoD Error

How disabling Fast startup can get rid of a BSoD

4 min. read

Published onJanuary 14, 2024

published onJanuary 14, 2024

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Key notes

A BSoD error dubbed L1c63x64.sys not only causes connectivity issues but also interrupts your work with constant shutdowns. Here’s what we came up with to put an end to this issue.

What is L1C63x64 sys?

This is a system file in the Windows operating system and is responsible for the functioning of the network adapter. This specific driver is associated with the Qualcomm Atheros Ethernet Controller.

You’ll spot the messageIRQL_NOT_LESS_OR_EQUALaccompanied by the L1c63x64.sys error, which typically occurs when there is a problem with the driver or when it conflicts with other software or hardware components.

How do I fix the L1C63x64 sys BSoD error?

Before you embark on any of the complex solutions, ensure your system is up-to-date, and you have the latest drivers installed.

1. Clean up temporary folders

For more ways toclean up temporary files, check out our expert article.

2. Run Disk Cleanup

And if using File Explorer is not a viable method, we havemore ways to carry out a Disck Cleanup.

3. Disable your antivirus/firewall temporarily

In some isolated cases, yourantivirus or firewall program can block your Internet or Wi-Fi, particularly when they interact with network drivers or conflict with other software components.

This, in turn, can trigger a BSoD. A good rule of thumb is to keep your antivirus updated to prevent compatibility issues.

4. Run the DISM and SFC scans

5. Update your network drivers

Updating your network driverscan be achieved through various ways, so if this method doesn’t work, you’re free to explore other avenues.

6. Disable Fast startup

While fast startup facilitates a faster boot-up process, it may also cause issues with certain drivers during the startup process. Some drivers may be unable to initialize properly, leading to conflicts and resulting in BSoD errors like the L1c63x64.sys, sodisabling fast startupmay be the best option.

7. Perform a System Restore

Unfortunately,BSoD triggersvary, and you’ll have to keep jumping from solution to solution in the hopes of finding a remedy for the L1c63x64.sys error. To help you save on time and the headache, we’ve compiled a list ofBSoD fixersthat will make your work easier.

And because you can never predict when one will occur, we encourage you tocreate your own BSoDfrom time to time to keep your system in check. It’s better to save your PC before it reaches its deathbed by making an early diagnosis.

Also, check out other like BSoD errors like theFileinfo.sysand how you can fix them using our comprehensive guide.

That’s all we had for this error but if you have any other tricks up your sleeve that worked for you, do share them with us. The comment section is open, so we’ll be waiting to hear from you.

7 Ways to Fix the L1c63x64.sys BSoD Error#

How do I fix the L1C63x64 sys BSoD error?#

1. Clean up temporary folders#

2. Run Disk Cleanup#

3. Disable your antivirus/firewall temporarily#

4. Run the DISM and SFC scans#

5. Update your network drivers#

6. Disable Fast startup#

7. Perform a System Restore#