text: i am getting an error message that ratio on the cpu has change every time i boot up my computer?   it's your mother board battery that is out. with your cpu ratio your date and time will also be reset to 12:00:00 january 01, 2001. you will have to change your mother board battery. if u don't then also u can work. but for the error message to stop it, form ur bios setup choose "halt on: no errors".  t.c.