WRT54GS V4 has suddenly changed it's network name

I've had this router working for roughly 2 years now, and several weeks ago it started to stop logging in automatically. Today, it completely dissapeared off the available wireless list. I've recycled the power several times, and now it's back with a totally new SSID. It is the only available network. on the list. One of the times that I powered off / on, the Cisco light blinked at a very fast rate with a rather bright white light. When I checked for available networks, it showed up as an unsecured network for several minutes before the light changed to it's normal color. The WLAN light is green, and I'm sending this through the router with a cable. The DMZ light is off. The power light is on.
When I run the Net Set Utility, I get a message that the router can not connect to the internet, which is wrong, since I obviously could send you this message.
What's up with the router?
Thanks,
Steve
Solved!
Go to Solution.

As you have used this router for more than 2 years or so you should upgrade the router's firmware...Download the Firmware here
Follow these steps to upgrade the firmware on the device: -
Open an Internet Explorer browser page.In the address bar type - 192.168.1.1
Leave username blank & in password use admin in lower case...
Click on the 'Administration' tab- Then click on the 'Firmware Upgrade' sub tab- Here click on 'Browse' and browse the .bin firmware file and click on "Upgrade"...
Wait for few seconds until it shows that "Upgrade is successful"  After the firmware upgrade, click on "Reboot" and you will be returned back to the same page OR it will say "Page cannot be displayed".
Press and hold the reset button for 30 seconds...
Then, unplug the power cable while holding down the reset button for another 30 Seconds...
Plug the power cable back in, and keep holding down the reset button for another 30 Seconds...
Release the reset button...Now re-configure your router...
If your Internet Service Providor is Cable follow this
If your Internet Service Providor is DSL follow this
To change the Wireless Settings click here
To set-up Wireless Security click here

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