BSOD IRQL_NOT_LESS_OR_EQUAL (L1C63x64.sys) on Windows 10 - Microsoft Community


i getting bsod 2 consecutive days same error code "irql_not_less_or_equal" caused by l1c63x64.sys, driver for

"qualcomm atheros ar8171/8175 pci-e gigabit ethernet controller (ndis 6.30)".

current driver version in laptop 2.1.0.21. tried find newer driver in asus website ([1], [2]) , other online sources, can find same version of driver (2.1.0.21) "windows 8.1"! can't find 1 made windows 10.

any other way mitigate this? can use ethernet in places (in other places use wifi), disabling driver not option.

thanks in advance.

device model: asus x450lcp laptop (3-4 years old).

[1]: http://www.asus.com/notebooks/x450lc/helpdesk_download/

[2]: http://dlcdnet.asus.com/pub/asus/nb/driversforwin8.1/lan/lan_qualcommatheros_win81_64_ver21021.zip

you delete .pdb files , leave .inf .cat , .sys files.

to install driver open device manager , right-click qualcomm atheros ar8171/8175  > update driver > browse computer driver software > let me pick list of device drivers on computer > have disk > "browse" , then click on the netl1c63x64.inf  > ok

continue installation , restart computer.



Windows / Windows 10 / Performance & system failures



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