Solved: Issues with Wired Internet "Unable to Contact Your DHCP Server"

[tech.dude]

This morning my internet stopped working on my computer, and stays at "Limited or No Connectivity".

My computer is hooked up to a router with an ethernet cord, and that router is hooked up to my modem. There is also another computer hooked up by ethernet cord to the router, and I use the wifi a lot for my iPod. Both work fine, it's just the internet on my computer that doesn't seem to work.

So far I've ruled out any problems with the modem, router, ethernet cable and network card. I even went out and bought a new ethernet cable to see if that might fix the problem, but it didn't. Right now I'm in safe mode on my computer and the internet works fine, so the problem doesn't appear to be with my ethernet card.

I've tried unplugging and leaving both the router and modem for a few minutes, changing the cable to a different port on the router, hitting the reset switch on the modem and router, and ipconfig release/renew, but when I try ipconfig /renew it tells me "Unable to Contact Your DHCP Server".

After searching for quite some time and trying various things, my internet still won't work.

 

[sp3851]

Make sure that the DHPC is set to Automatic on the PC.
Check Control Panel, Administrative Tools, Services. The DHCP Client service should be Started and its Startup Type should be Automatic.

 

[tech.dude]

I already checked that. It's on automatic and it's running.

 

[TerryNet]

Most likely a non-Windows firewall or security suite, or maybe even some other security application, that is mis-configured, corrupted, out of date or was uninstalled but did not go away completely. What security programs do, or did, you have on the machine?

Your ability to access the internet in Safe Mode with Networking (at least I assume that's what you meant) does indeed say the hardware is OK and the culprit is software.

 

[tech.dude]

It was Spyware Doctor. I installed it last night. After I removed it and restarted, my internet worked again.

Thanks.

 

[TerryNet]

You're welcome.