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Beginner
1,266 Views

DH77KC Chassis intrusion + bios password

Good morning,

i have the m/b in the title.

 

I'm getting this extremely annoying problem that is keeping me from using my pc.

 

The BIOS recognizes a chassis intrusion, even when there is no sensor connected to his pin header.

 

After pressing Y to enter setup, it asks me to enter a password that i never set.

 

Tried moving the jumper in configuration mode but nothing changes:

 

-Intel splash screen

-black screen for some seconds

- chassis intrusion detected etc etc

- "ENTER PASSWORD TO UNLOCK SYSTEM"

The first time i pressed enter leaving the password blank, it worked.

 

At reboot i'm in the same situation, but it doesn't accept the blank password anymore.

Recovered bios successfully with an usb key, flashed different versions (downgrading) but with no result.

 

Reset the cmos leaving the battery out the non-powered board for 2 hours, at reboot it adds "cmos checksum error" + "time not set" but still that intrusion error.

I even tested and changed CMOS 3v battery..

Is there a way to restore functionality? I'm desperate.. been testing and trying for 10 hours or so..

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5 Replies
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Super User Retired Employee
135 Views

First step is to clear the password. This is documented here: http://www.intel.com/content/www/us/en/support/boards-and-kits/desktop-boards/000005690.html Intel Desktop Boards BIOS Password Clearing.

...S

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Highlighted
Beginner
135 Views

Already tried that.. Moving the jumper to "configuration mode" doesn't change the situation.

 

It still boots with the "chassis intrusion" warning, leading to "insert password to unlock the system" screen.. Tried a lot of passwords (admin,administrator, leaving blank and pressing eneter) without succes.

 

I tried to delete the warning with ciclear too, but the board doesn't let me boot anything without first inserting the password.. I'm starting to think it's a hardware fault

 

Is there an hardware workaround to bypass the password?
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Super User Retired Employee
135 Views

Crap, I was afraid that this would happen. No, it's not a hardware fault; it is a BIOS bug. Because this board has been end-of-life'd and Intel exited the boards business, there is no one left to fix this bug.

You could contact Intel Customer Support and see whether (a) they have any of these boards and (b) will replace your board (since you can't use it as it is). It's worth a try...

...S

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Highlighted
Beginner
135 Views

Thank you for your help!

 

Since i bought this board online i requested a refund, the seller will deal with the problem..

Have a nice day!

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Highlighted
Super User Retired Employee
135 Views

This problem was likely the reason why they were selling it so cheap...

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