Wireless router suddenly stopped being able to connect to the internet.?

Question

Here's my problem, one day my WRT320N Wireless Router suddenly decided it wouldn't go online anymore through the ethernet connection to my pc. I tried connecting the pc directly to the DSL modem and that still works.
I tried to isolate the problem, first i tested the router's ethernet cable by using it to connect the DSL modem to the pc, i was able to go online. So it isn't the cable.

I tried all combinations of resetting my router by holding the reset button (for 30 seconds), rebooting the pc, restarting the modem, in all possible orders and combinations, still nothing can get the router to connect to the internet.

I even let Windows 7 search for updated drivers for my Realtek RTL8139 Family Fast Ethernet NIC, and installed the latest version (it found 2008 versions vs the current 2007 ones). That still didn't work.

Are these common router symptoms of a problem that can be solved by troubleshooting?
How can i tell if it's physical damage to my router?

More info: when i connect the router to my pc through ethernet the pc detects the signal, and treats the router as if nothing's wrong. I just can't go online. When the modem is connected to the router, the modem's ethernet LED is lit like everything's fine. It just won't go online!! The taskbar icon of the network at the bottom right just has the yellow exclamation mark and says "no internet access".

I did not do any upgrading or install any new software or change any settings on my pc prior to this happening.

Answer 1

Connect Broadband Modem [wired] to Router [wired] to PC.

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* DO NOT REMOVE POWER TO RESET NETWORK DEVICES *

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Set router POWER OFF.

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Reset Broadband Modem: With a straightened paperclip, press RESET button momentarily.

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Wait 60 secs.

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Set router POWER ON.

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Reset router: With a straightened paperclip, press RESET button momentarily.

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Wait 60 secs.

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Open PC Command Line:

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Click [Start] - Click [Run...] - enter: cmd, press [ENTER]

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At the prompt (c:\.....>) enter: ipconfig /all, press [ENTER]

- Ensure DHCP Enabled == YES

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At the prompt (c:\.....>) enter: ipconfig /release, press [ENTER]

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At the prompt (c:\.....>) enter: ipconfig /renew, press [ENTER]

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TEST: Open Web Browser: Connect to Internet.

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If SUCCESS: Repeat Steps after PC Command Line on other PCs.

Answer 2

reboot. If the primary one WAS running and stopped, did you unplug it for a minute and plug it again in, forcing it to reboot? There could also be a reset button that you'll be able to press, however will desire a sharpen pencil or paperclip at the again of the router.

Answer 3

START > Control Panel > Internet Options > Connections Tab



Click LAN settings, if you don't use proxy make sure the proxy box is unticked.



Select Automatically Detect Settings.



Click Apply, then OK.