Hi, I own a Emachines T4480 and have just replace the power supply with a Forton 400watts. After I install it, the computer works perfect except when I turn on the computer. I'd always get the Bios Guardian disable screen. Anyone know how to get rid of this? I have the Phoenix Award BIOS v6.00PG and the motherboard is system own motherboard (not sure what it is). I read somewhere that updating the BIOS for Emachines can mess up the motherboard or something. Please help. Thanks Edit: It says this: BIOS Guardian (R) enabled you will need to disable BIOS GUARDIAN to update BIOS.