Blind flashing VBIOS

I got my VGA BIOS broken two days ago.
It was because of Winflash, which flashes VBIOS in windows.
First of all, NEVER USE WINFLASH.

I didn't read carefully about it's dangerousness.

Anyway, here is my story.
And I hope this will help other people having the same problem.(But I hope no more disease like this happen to someone.
NEVER USE WINFLASH)

When I first encountered this problem, I got blank screen on bootup.
There was no way to do something, because the laptop even doesn't recognized hard disk as well.

I asked here in the thread GX640 owners lounge, and people said it is impossible to recover by myself.


I also asked MSI technical support, and they replied me that I need to get AS.
He said, since foreign MSI companies don't have BIOS writer, entire replacement of mainboard is required.

This was really a nightmare.
But I thought there might be a way because this is not a problem of BIOS, but VBIOS.
So I tried to fix this by myself.

The reason why this was so hard work is, in fact the laptop doesn't go through posting process.
But I found a trick.
When the laptop starts to boot I hit numlock key repeatedly then sometimes it passed the posting.
I checked this by responses of drives such as USB stick, hard disk.

I found that I can get into CMOS because after I made it to post and hit DEL key and then I hit F10+enter.
Then it rebooted.
So I was sure I can enter the CMOS.

Next step was to change boot priority because my setting was hard drive 1st.
So I changed it by blind CMOS manipulation.
I needed a key sequence to do that.
Septimus_DSX helped me using CMOS screen images.(thank you Septimus_DSX)

And then I made a DOS-bootable CD and tried to boot on DOS.
The really hard stuff is that the laptop didn't always pass through posting process so I reboot again and again and tried by hitting keys.
And moreover, it hung up very frequently during each step.

But finally I got a chance to get the DOS prompt!
I can check it because CD-ROM responses when I hit enter after any command.
I went to C: drive and did atiflash.exe to recover my VBIOS.
I rebooted with no hope, but there was a miracle.
I got the screen.

I'm writing this post right after I came back to windows on my laptop.

that's it.
I made it.
I really didn't expect this is possible.
I spent two entire days, but I'm now so happy..