Hi,
I'm Sumit, here to answer your query at the Microsoft Community.
It is related to Realtek Ethernet driver.
*** WARNING: Unable to verify timestamp for rt640x64.sys
rt640x64+0x28d4e
Download the latest driver from the manufacturer before.
Remove the driver completely:
https://answers.microsoft.com/en-us/windows/for...
Open the Device Manager: Press the Windows key + X and select Device Manager from the menu.
Find the Device: Double-click the category with the device driver you wish to remove.
Uninstall the Device: Right-click on the device and choose “Uninstall device” from the context menu.
Confirm Uninstallation: If you wish to remove the driver package in addition to uninstalling the device, select the “Delete the driver software for this device” option2. Then click "Uninstall".
Reboot Your Computer: After the uninstallation is complete, reboot your computer as soon as possible
Hope that helps, and rely on us for any further inquiries. All the best.