BSOD errors with different strings caused by ntoskrnl.exe and ndis.sys

This time I am suspecting Atheros AR8151 PCI-E Gigabit Ethernet Controller driver, and that driver is fairly old.

Code:

fffff880`045d2000 fffff880`045e7000   L1C62x64   (deferred)             
    Image path: \SystemRoot\system32\DRIVERS\L1C62x64.sys
    Image name: L1C62x64.sys
    Timestamp:        Mon Sep 27 12:06:23 2010 (4CA03B67)
    CheckSum:         0002220E
    ImageSize:        00015000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Unfortunately there is no update available. Drivers for Atheros AR8151 and Windows 7

Plan to uninstall and reinstall the driver?
First, download the network card driver from manufactuer's website, Drivers for Atheros AR8151 and Windows 7
Then reinstall the driver as follows:

1. Click the Start Button, type "devmgmt.msc" (without quotation marks) in the Start Menu Search box and press Enter.
2. Double click to expand "Network adaptors".
3. Right click your network card and click Uninstall.
4. Check "Delete driver software for this device" check box, click OK.
5. Restart the computer
6. If windows does not auto configure the appropriate drivers at startup, install the downloaded one manually. Driver Install - Device Manager

Also, you may perform a virus scan....

• Windows Defender Offline

Let us know the results.

It may help if the system were genuine!
You appear to have an ASUS Key installed on a Gigabyte retail motherboard.

Please follow this tutorial and post an MGADiag report]

https://www.sevenforums.com/windows-updates-activation/234159-windows-genuine-activation-issue-posting-instructions.html

Ignore errors produced when clicking on the Copy button - they simply mean that the tool could not create the backup files for some reason. The data is still copied to the clipboard for pasting to your response.

Please also state the Version and Edition of Windows quoted on your COA sticker (if you have one) on the case of your machine (or inside the battery compartment), but do NOT quote the Key on the sticker!
http://www.microsoft.com/en-us/howtotell/Hardware.aspx

That's what I'm seeing too Noel--Asus OEM Windows 7 Ultimate.