Need to upgrade my computer software and lost admin. password (NO disc install)
My administrator password was changed, I can not access for changes that need this password because I don't have the disc to install the software again and I also wanna upgrade the current Mac OS X 10.5.8 with 1.83 GHz Intel Core 2 Duo, it's got 1 GB 667 MHz DDR2 SDRAM. What can I do or what do I need to buy from apple on line?. My computer keeps running out of space or applications stop running constantly.
Mac mini, Mac OS X (10.5.8)