Login Issues

Ok having some issues with my WNR3500Lv1. I was running tomato on it perfectly fine but was having some issues with wireless speeds. I figured I'd flash back to stock and see if that made any difference or not. I was able to return to stock but the router won't allow me to login even after a hard reset. I even ordered a serial cable to see if reflashing it that way would work. Even flashing back to DD-Wrt or tomato is screwy. DDR will allow me to login once and after that won't accept a username even if I change it the first time I login. Tomato will allow me in but never prompts for username or password. I could run like this but have some access restrictions in affect that I don't want anyone to be able to change.

I have even used putty with the nvram get command to view the current username and password but entering those has no affect. Even tried writing a new username and password with the nvram set command and no dice either. I have tried multiple hard resets and even erasing device with putty and reflashing each of the firmwares but still having issues.

Here was initial procedure I followed when I started having issue...

Was running tomato so flashed dd-wrt with option to reset defaults

Telnet into router to use dd-wrt erase linux command

pushed stock firmware with tftp and upon first login it wouldn't let me in. Tired multiple hard resets with nothing.

So I ordered the serial cable and have attempted just about everything I can find but router won't let me login.... Any help would be appreciated!