[SOLVED] Network Reset turned to Ethernet doesn't have a valid ip configuration

[KamoteQ]

Hi guys,

I've tried to reset my network as Windows File Sharing was not recognizing my other PC. After doing so, I got an unidentified network (on main PC). So I tried the following to no avail:

• disabled and enabled adapter
• uninstall adapter and reinstalled; also tried uninstalling and restarting
• I tried the cmd ipconfig prompts, dnsflush, netsh winsock and IP reset
• disabled ipv6
• assigned an IP, subnet mask and gateway
• Reboot and restored to default my router

I can also see the automatic IP assigned is 169.254...

So I have a D-Link router in our living room connected to a TP Link desktop switch. From the desktop switch, I have my 2 PCs and my TV connected (all cannot connect to the network at this point). Other devices on the D-Link router can connect to the network/internet. I tried taking the TP Link out of the equation and the internet works. I guess my other question is, can resetting the network stuff up my TP Link desktop switch?

 

[bill001g]

A switch is a very stupid device and if it works with some devices it has to be functional.

First check to see if you even get lights when you plug your PC into the switch. Generally no lights mean a bad cable but it can be a driver issue in the pc. Bad cables are very strange they can work on some devices but not others.

If you get lights and it does not work. Try only plug the pc into the switch and connection going to the router. You are more or less using the switch as cable coupler. It would be very strange if you could connect your pc to the cable going to the router directly but not have it work going via the switch.

If this works in means there is some conflict between your pc and the other devices. Check that there is no duplicate ip addresses.

 

[KamoteQ]

I do see lights in both ends of the cables from the switch to the devices (PCs and TV).

So I tried just plugging 1 device to the switch and voila, it works. Now the problem is when I connected the other cables, i lose connection again.

How do I check/resolve conflict with duplicate IP addresses?

 

[bill001g]

I would add one at a time and see which is causing the issue. Maybe a duplicate mac which should be close to impossible unless you intentionally set it. The more common would be a duplicate IP. Be very sure the subnet mask and gateway IP are correct these can cause issues even if the ip addresses are different.

 

[KamoteQ]

I would add one at a time and see which is causing the issue. Maybe a duplicate mac which should be close to impossible unless you intentionally set it. The more common would be a duplicate IP. Be very sure the subnet mask and gateway IP are correct these can cause issues even if the ip addresses are different.

Freaking amazing. So I reserved an IP on this PC, then plugged the TV and both are connected. Thanks a lot.

This stupid switch haha