[Resolved]asus crosshair v formula z bios screen not displaying correctly

[jeg]

Good morning all!
I have been looking for several days why my bios is not displaying correctly.
I have tried several things already but to no avail:
-clear cmos
-clear rtc ram
-try another graphic card
-modify screen résolution (directly on the screen)
-downgrade the bios
-try another dip-8 chip with last bios (try to re-flash bios on new chip)
-try to disconnect all devices from the mother board and reconnect only necessary device to start the computer
-try asus pc diagnostic and only bad result sometimes is rtc
-the on board code when li launch the bios is 64 or 66 (cpu dxe initialization is started)

My mother board is asus crosshair formula z with 2201 bios
My ram is g.skill trident x 4x4g 2400
My cpu is amd fx 8350
My graphic card is radeon hd 7990 (i try to with another radeon hd 6870)
My power supply is corsair ax860i
I have a ssd with windows installed on

The computer work great, just the bios not displaying correctly. I can play or anything else.

I noticed that the mouse (usb or ps2) does not work in the bios but work in the menu ez mode or ez flash.

Thanks in advance for your help guys!

[SDCGSB]

Presumably it was always in French (?) / just jumbled and no mouse input?
Had you been doing anything else with the MOBO when this arose?
For clarity, had you refreshed current bios (on either chip)?

[jeg]

Hi guys!

I disassembled the motherboard and found traces of oxidation in the chip holder of the bios.

In some times motherboard died 

[jeg]

Yes it's in french, because i'm french. When i restart the settings it came back in english.
I can launch my bios every time and move in the menu with keyboard usb and ps2 with no problème but no mouse when i move the mouse the cursor disappear and nothing append. But if i go in ez mode or ez flash the mouse come back and work.
The screen is always like that, i add some pics.
I tried to downgrade the bios so it's 1901 on the picture but i tried 2002 and 2201. 1901 is the last i can use.

[jeg]

When i'm in ez mode, mouse work and where my mouse passed pixel are refresh and show what is 'under' or 'hidden'..

[jeg]

I just find what the problem is, it's a initialization/synchronization problem with the screen. I made a little video if that can help understand.

[SDCGSB]

So the issue was with the monitor/signal to the monitor (white “Oceanic”), not in your bios or chip?
Looks like it worked when you plugged it in but when reset it misbehaves.

[jeg]

Yes it was with the oceanic screeen, i tested the ddc and it seems to be not complete. It's a poor screen..
It won't work when i start or restart computer.
But it work if i plug it in another screen where the display of the bios work before i plug it into the oceanic screen.