[SOLVED] Windows won't allow a speed higher than 10Mbps

[Gillesser]

Hi there,

After a recent forced windows update (17/07), i noticed upon boot that windows wouldn't find any connection (globe icon). My ethernet speed is capped, speedtest.net and fast.com also show this.
The only way i can get a connection is to hardcode it to 10Mbps Half/Full Duplex instead of using auto-negotiation . I also don't use any router, my ethernet cable is plugged straight into the wall. Here is the hardware-id of my NIC.

Specs (custom build pc):

• ASUS Z97 Sabertooth Mark 1
• I7-4790k
• 16gb DDR3 8x2 1866mhz

Things i've tried:

• Using 2 other cables (CAT5E & CAT6)
• Reinstalling OS
• Updating to latest drivers.
• Hardcoding it to 100mbps full duplex (it won't find any connection, windows says that the cable is unplugged)
• Putting it back to auto negotiation (it won't find any connection)
• Disabling EEE
• Trying both LAN Ports on motherboard
• Setting Static IP

Thanks,

 

[bill001g]

This is almost always some form of hardware issue. It makes it hard if you do not have access to what ever is on the far end of the wall jack.

When it refuses to run auto mode that many times means the device on the remote end is set to some fixed value, likely 10mbps/full duplex in this case.

Your first step if there is any option will be to check this device. You could also take your machine and plug it in directly with a patch cord if you can move the pc temporarily

In cases where the far end is actually set to auto and can run at gigabit speeds the problem is almost always a cable. Since you have tried more than 1 patch cable this means it is more likely the problem is with the in wall cable. Lucky it is seldom the wire itself. Most times it is some issue with a loose wire in one end of the connection. You need to inspect the wires and see if there is anything obvious. Make sure the wires are placed in the proper order, there should be a color code on the side of the jack you can see if they are matched. Some times you can't tell just by looking but rather than buy testing devices you can just carefully pull out the wires cut off 1/4 inch and repunch them down. You may or may not need a punchdown tool depending on the model of the keystone. Some are designed so the cover can be used to push the wires in.

 

[Gillesser]

This is almost always some form of hardware issue. It makes it hard if you do not have access to what ever is on the far end of the wall jack.

When it refuses to run auto mode that many times means the device on the remote end is set to some fixed value, likely 10mbps/full duplex in this case.

Your first step if there is any option will be to check this device. You could also take your machine and plug it in directly with a patch cord if you can move the pc temporarily

In cases where the far end is actually set to auto and can run at gigabit speeds the problem is almost always a cable. Since you have tried more than 1 patch cable this means it is more likely the problem is with the in wall cable. Lucky it is seldom the wire itself. Most times it is some issue with a loose wire in one end of the connection. You need to inspect the wires and see if there is anything obvious. Make sure the wires are placed in the proper order, there should be a color code on the side of the jack you can see if they are matched. Some times you can't tell just by looking but rather than buy testing devices you can just carefully pull out the wires cut off 1/4 inch and repunch them down. You may or may not need a punchdown tool depending on the model of the keystone. Some are designed so the cover can be used to push the wires in.

Hi, thanks for the quick reply.
The issue lies with the cable in the wall to my room, since i've connected my pc downstairs to a different ethernet jack, i get my old speed back without any issue. The way i fixed this is by plugging the cable in another port in my modem, it's probably a broken port. I have full speed now.