Can't remember my startup password. - Acer Aspire 5315 Notebook

When you boot up to the log in screen type in administrator to log in once you have your computer running again you have to take control (administrator)control panel user accounts on the users tab,click the name of the computer administrator you can change the password there or if your computer has a system restore you can restore it to an earlier date which will have your personal settings

or

during the boot up process you will see on the screen for a short amount of time press a certain key to enter set up

Press and hold that key during the boot up process to enter BIOS scroll down to set user password or supervisor password you can change or remove your password from there

also

control panel user accounts

on the users tab,click the name of the computer administrator you can change the password there

hope this helps