How to bypass/read password from a BIOS that have default password

Hi everyone
I got a unknown model Intel 7series motherboard(maybe Q77) with i3 3220, But I found that the BIOS looks like have default password set by OEM and I can’t get in the BIOS.

I had try to get off the battery and set JCOMS jumper to clear the data but the password still needed.
so I dumped all 8MB data by CH341A and read it by using AMIBCP and UEFITool , I can find “Invalid Password” strings from AMIBCP but can’t locate it in UEFITool so I have no way to bypass or find it.

Could Someone tell me how to bypass password check or how to find/modify the default password? thanks.

Here is the bios dump :TinyUpload.com