I hope i'll be able to explain this well, so pls bear with me... Firstly, I got Ubuntu 12.4 I forgot the password for my admin account, so i changed it in thhe grub- in recovery mode. after i've been able to access only the guest account, where at least i changed the option login withou passwd for my admin account (obviously at this point the passwd worked since for changing this option u need sudo privileges) However, i still couldnt log in into my master account- when i click on login on startup, the page goes black, then comes back to the same point where u select users. i tried many different options- probably messed it up too! but I am not able to even use the password again in the guest account. Im totally logged out, pls help.
note that a solution without using a dvd/bootable usb to fix grub/linux would be much more preferred! Since Im travelling in remote areas :p