Cisco 2811 Router not saving any changes i am making. Help

[Lzypenguin]

I am brand new to cisco routers. I am just getting my feet wet. I have 2 different cisco routers, and 4 different switches. When i apply any changes to any of my other 5 devices with #copy running-config startup-config they all work. And they used to on this 2811, but for some reason they have stopped applying.

So the router has everything reset. I log in and change the hostname from Router to R1. Then i copy running-config startup-config and it says its sucessful. Then i show startup-config, and it has my change in there. Then i execute reload, or i actually reboot the device, and every time it comes back up being Router. 

I was changing a bunch of other stuff, and assigning IP's and setting username and password for vty ports and what not, but everytime i would reload it would all be away, so i am simply trying to change the hostname, reboot, and have that changed. 

Can someone please try and help me figure out why none of the changes are applying?

Thanks

[Leo Laohoo · Accepted solution]

Check the config-registry value. The recommended value should be 0x2102.

[Lzypenguin]

Mine is set to 0x2142

[Lzypenguin]

I changed it back, and now its working.

Thank you so much.  Any reason why or how that could have been changed? I know i didnt change it manually.

Thanks

[Leo Laohoo]

0x2142 means boot into ROMmon and IGNORE the configuration.

2811 isn't really a "new" model.  The previous owner must've performed a password recovery and didn't bother to set it back.