I'm having a big problem in this acer aspire 4730z. Here's what i did. Make my flash drive bootable put the flash files in the flash drive put the flash drive in the laptop - press fn + esc keys plug in the ac adapter (w/o battery) the power switch flash once and then i press the power button after that the power starts up and then after a second the light on the power button turn off and also the light on the usb flash drive. I'm very confused because the power led button have a light meaning that the board is turned on. Can any one help me with my problem? Anyone know the default bios does this unit have? Thank you for a quick reply.