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PBrun5
Beginner
1,175 Views

No display signal after bios change and reboot on DQ77KB

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Hi

I have a DQ77KB board that works but no longer outputs a video signal. I can attach my screen to the displayport via an hdmi to displayport adapter and to the hdmi port.

After trying a different setting in the bios(unfortunately I don't rembemer how it was) I was no longer able to get a display signal.

The board boots up with no problem

removing ram produces 3 beeps, with ram all okay, green led, fans spinning fast and then slowly after it seems to have done a post, numlock keys on keyboard turning on and off okay

but I have no idea how to get my display signal back.

I tried to get the BIOS to go back to its default settings by changing the jumper to 2-3 but guess what I'm not getting a video signal so I have no idea as to what keystrokes I should be doing

The same applies to trying to flash the BIOS with a .bio file on a formatted usb key (even tried 2 usb keys with a bio file at same time) I see the usb led activity but I can't see what is going on and for all I know it might expect a keystroke I am unaware off. I then wait for a long time but unfortunately the bios doesn't seem to have been flashed as my no display remains.

Could someone please tell me what keystroke presses are expected to either go into the bios and reset to default settings and/or what keypresses are expected from inserting a usb drive with a .bio file? All of that is ofcourse under the assumption that a bios setting keeps me from having a video signal.

Any tips/ideas/procedure are very appreciated thank you

BTKB344007QT

AA G7143 501

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1 Solution
n_scott_pearson
Super User Retired Employee
251 Views

After powering on, you use the F2 key to enter BIOS setup. You should press it repeatedly for ~20 seconds to be sure it has been taken and that BIOS Setup is running. Next, press the F9 key then the Y key to reset all BIOS parameter settings to their defaults. Finally, press the F10 key then the Y key to request that the BIOS parameter settings (i.e. the defaults) be saved as BIOS Setup is terminated and the system is rebooted.

Hope this helps,

...Scott

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5 Replies
n_scott_pearson
Super User Retired Employee
252 Views

After powering on, you use the F2 key to enter BIOS setup. You should press it repeatedly for ~20 seconds to be sure it has been taken and that BIOS Setup is running. Next, press the F9 key then the Y key to reset all BIOS parameter settings to their defaults. Finally, press the F10 key then the Y key to request that the BIOS parameter settings (i.e. the defaults) be saved as BIOS Setup is terminated and the system is rebooted.

Hope this helps,

...Scott

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Miguel_C_Old
Employee
251 Views

Hi mutepower,

N.Scott.Pearson sent you the step to get into the BIOS.

If problem continues, it is necessary to narrow down the issue; do a test using only motherboard, cpu, 1 memory stick, wire keyboard and a straight video cable HDMI to HDMI or DP-DP.

Regards,

 

Mike C
PBrun5
Beginner
251 Views

Hey thanks a bunch for taking the time to write this down for me I tried this 2 times but its not rebooting. I'll try again tomorrow.

PBrun5
Beginner
251 Views

Thanks man tried again when I realized I had the jumper configured on 2-3 instead of 1-2 and it worked like a charm! Thank you for sharing

PBrun5
Beginner
251 Views

I noticed that whenever I connect the displayport cable to hdmi I lose my display signal. I have to reset the bios everytime I do that. I will try and update the bios to the latest version

[Be sure to disable IGD Flat Panel in the BIOS if you have ghost screen issues in Linux like me]

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