the PC went to sleep automatically

Dear friends,

We use Beckhoff IPC with WIN7 in our device. But these days, the IPC went to bed without any manual operation. I activated the Option to and found sleep layout are all disabled:

Then I checked the system event log and found the following information:

I would like to know if "Button" means that the power button on the IPC and the "cover" means that the screen of the laptop? What an ICC and there is no cover and no one touched the power button when the IPC fell asleep. What should I check/do next?

Any suggestion will be so appreciated! Thank you.

Hi Ruth,.

Thanks for your help.

I want to answer your questions first:

1. what happens if you disable sleep mode?

Martin: The windows user interface login will appear if I move the mouse or press a key on the keyboard.

2. did you of recent changes to the computer?
Martin: No, the customer won't use it for the purpose of production. They have no change on the computer.

3. What is the number of brand and model of the desktop computer?

Martin: The PC is Beckhoff IPC(Industrial PC) and module C6930-0040

I followed your instructions to check the display driver and found nothing abnormal. Then I downloaded the driver on the manufacturing site and reinstalled. Unfortunately, the black screen again and the same log information recorded in the system event log.

I checked the log information of the events system with care and thought here 'Button' referred to as maybe two things:

1 power button on the IPC Cabinet

2 power/sleep keyboard key

So, I checked the power button on the IPC first and found nothing abnormal. Then I took the keyboard and he shook vigorously... Ahhhh... black screen has arrived!

I changed a whole new keyboard and mouse and I will keep my eyes open on the IPC status running in the following days.

Thank you very much! Good day!

Tags: Windows

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