lah49jac

Hi everyone! I hope you help me. I have a laptop Acer 5720 z, and I tried flash bios ('cause the laptop have a problem with ventilators and I'd supposed it was for old version bios) I've used the method to copy .fd file in USB flash stick, plug this in laptop, hold Fn+Esc keys down, connect power cable and press power button... However USB flash and CD-lector only blink. I'll try others methods, but if someone have the same problem (with this laptop model) I'd be grateful his response.