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Q:
Few days ago, my colleague wanted to update BIOS for his N400c, and in
order to start from U disk, so I helped to download a make refresh tool
from HP. And then comes the problem: the machine could work normally as
thought before, refresh is carried out, a timer shows up, and the
laptop restarts. After this, fan stops rotating immediately, three LED
light marks: A, 1 and downward arrow, are all gone. But I thought these
natural and went have a coffee.
10 minutes later, nothing changed, so I tried disconnecting the power
for laptop. Whereas, the power button had no response at all. I pulled
out the power and push the power button again. Finally the computer
started, but again here came the state as described above.
At this moment, I began hating myself. So I started searching on
Google, hoping that I was not the only lucky guy in the world.
Now the first question is: the BIOS file from HP is 1024kb, and the
BIOS WPH needed is of 512 kb. However, now even I press all
combinations, like Fn+B or Win+B, there would not be any beep sound or
attempt visiting disk.
I might need parallel port jumper, but I don’t know how to get one,
or which pin of N400c could connect to the simulation 1. Possibly, the
recovery job doesn’t fit N400c, or it doesn’t support disk, but USB
disk?
I hope here someone could give me a right direction, or just let me
know if I could handle the problem or not.
Thank for any help!
A:
Please try the next methods:
-Pull out all devices on laptop (USB interface, network card and so on)
.......
Please click here
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How to solve the problem that N400c breaks down after updating BIOS?