Tank you so much.... YES BTO 15V125+HDMI T7250
This is my problem:
A corrupted BIOS (sometimes called BIOS checksum failure) can be diagnosed by the following symptoms:
When powered on, the power LED lights up, but the screen remains black.
Keyboard does not function.
Hard drive LED lights up briefly, the disk spins up, but does not boot.
Optical drive lights up briefly, but booting from a bootable CD-ROM is not possible.
Floppy drive (if present) lights up briefly, but booting from floppy is not possible.
Some systems may produce error beep codes indicating BIOS failure. Mine remained silent though.
In short, the system does not boot at all. It can be turned off by holding the power button for 3 seconds.
I try it with Crisis Recovery Disk, but nothing works... I can't fix it....
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