GS105 Network Switch - Windows 10 pc only 100 mbps connection

[Texv]

Hey everyone, 

Yesterday I bought a GS105 network switch so I can split a connection (all CAT6 cables) between two PC's. One in my living room (30 cm cable, ~11 inches from the switch) one in my bedroom (10m cable, ~33 feet away from the switch). 

The switch is receiving a gigabit connection from my router (two leds flickering on the switch), but my bedroom computer is only receiving a 100mbps connection (one light flickering on the switch, and speedtested it). If I take out the switch and use the same ethernet cable to plug my bedroom computer directly to my router, I do get the full connection speed (~250 mbps). 

Now the weird thing is. My living room computer does receive the full connection speed through the switch. So it seems to be a problem with my bedroom computer, but I have no idea how to fix it. I've tried all the ports and tried rebooting as well, but that didn't help either. Can anyone help met troubleshoot the problem? Networking is new subject for me and I can't figure it out. 

Thanks in advance! 

[plemans · Accepted solution]

so if you have a switch that you can prove all the gigabit ports work by testing them with the computer that does get gigabit, that kind of narrows the issue. 

1. The ethernet cord running to the pc

2. the hardware in the pc

3. the software in the pc

you can try uninstalling/reinstalling your network card/driver.

try replacing the cable

try changing the network card settings to see if something in the driver settings is dropping the speed down. 

[plemans · Accepted solution]

so if you have a switch that you can prove all the gigabit ports work by testing them with the computer that does get gigabit, that kind of narrows the issue. 

1. The ethernet cord running to the pc

2. the hardware in the pc

3. the software in the pc

you can try uninstalling/reinstalling your network card/driver.

try replacing the cable

try changing the network card settings to see if something in the driver settings is dropping the speed down. 

[Texv]

I have tried all kinds of different cable combinations, but like I said, another cable would also give me a bad connection through the switch, but a good connection directly to the router. 

But anyway, I fixed it! Not knowing what else to do, I made another cable to length and that one did support a gigabit connection. I'm really not sure why other (tested and fully functional) wires didn't work either, but I'll let that go. It's fixed now. Thanks for the tips!