Intel® Desktop Boards
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DQ45CB AMT_LED Flashing at power on


Hi, I have a desktop having Intel DQ45CB board. When I put the PC on power and press the power button, it does not respond immediately. I've noticed that the AMT_LED red lamp is flashing. A few seconds later (maybe 10 sec) the PC starts to boot on its own. At this time the AMT_LED stays red without flashing.

When I try to shut down the PC, it fails to power off. The operating system shuts down, but the PC is like it's trying to restart. The disks and fun stop and immediately start-up again. It does not boot again, but it's doing this all the time without being able to shut down. So, it stops and immediately starts again over and over again. I have to remove the power cord.

When I put the power cord back in, then the same thing happens, i.e. the AMT_LED is flashing and although I press the power button, it only responds a few seconds later, but it continues where it was left, i.e. powering off and on. This time I have to keep the power button pressed for 10 sec to power off. When I press it again, then a few seconds later starts-up normally.

I removed memory and I could hear three long beeps. Does this mean there's something wrong with the power supply of the PC or could it be something else?

Thank you very much in advance.

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5 Replies
Super User Retired Employee

Use F2 key to get into BIOS Setup. Scroll down to the entry that is titled Advanced System Information or something like that and press enter. Now scroll down to the bottom of the display. There should be a display of the version number for the Management Engine (ME) firmware. If it is blank or shows, then the ME is not working. In this case, try to update to the latest BIOS using the jumper-based BIOS Recovery method. Once this is completed separately, check if the firmware version then displays properly.

Hope this helps,



Thank you Scott.

Intel Management Engine Information shows Firmware Version to be

I have followed steps provided by Alber Jann here:

as I considered my problem to be the same as in that thread.

Unfortunately no luck.

The problem is still here.

Super User Retired Employee

You reset AMT completely?

When did this issue start occurring? Was there something you did just prior to that (like a BIOS update)?



I have the same problem, please tell me how to solve it

Super User

@haiku Dredging up old threads is not going to help you.

Start a new thread, FULLY describing your problem.


Doc (not an Intel employee or contractor)
[Maybe Windows 12 will be better]