6 
2 No internet connection laptop
Hello, my friend computer started to act weird recently, many random popups started to appear with random letters wrote on them, and the internet stopped working.
I figured out later that the popups where caused by a program that the company use to exchange information, but disabling it didn't repair the connection problem.
In the device manager, I can see that it detects the wifi card (Qualcomm....) without any icon error, and inserting the RJ45 cable directly didn't work either, the computer behaves like there's no network peripherals.
1 
Hi,
What is the status of the Realtek PCIe FE Family Controller?
Right click on the entry > Properties > General tab > Device status box.
Does it say "This device is working properly"?
由 jayeff 完成的
I cannot verify this right now but if there was a problem, a warning icon will appear next to the peripheral.
由 Vertinhol 完成的
@vertinhol
It never hurts to look ;-)
If it says that it is working OK then you know that the LAN controller can communicate OK with the BIOS/OS and since it doesn't work externally it may be a hardware issue i.e. RJ45 socket or associated components.
If the motherboard is a Wistron Starlord13_R - 15296-1 then here's a link to the schematics that may help. Unfortunately you have to buy it but I couldn't find any free downloads. You may have better luck.
由 jayeff 完成的