Hello DucanDZ77RE-75K, thanks for joining the Intel Community.
These are some troubleshooting steps you can follow for this kind of behavior:
- Test the system using minimum configuration out of the chassis (motherboard, processor, and power supply) No memory. Since there is no memory on it, the system should give 3 beeps.
- Remove the CMOS battery for about an hour Desktop Boards — CMOS Battery
- Add one memory stick and try to access the BIOS. Once you are in BIOS please check which is the BIOS version.
- If the board is running the latest BIOS version available, you could try installing a previous one. It will be necessary to follow the recovery method Desktop Boards — Instructions for Recovery BIOS Update
If you have access to another system, please check the following link
DuncanDZ77RE-75K, BIOS version 0039 is the first version available for this motherboard. I would recommend checking the BIOS Update Release Notes on this URL. You will be able to see the fixes and features included on each version. http://downloadmirror.intel.com/22828/eng/GA_0066_ReleaseNotes.pdf
These are some important versions you could flash on your system.
BIOS Version 0049
BIOS Version 0057
BIOS Version 0061
BIOS Version 0066
Have you tested the system out of the chassis?
If you are using a network card, could you please remove it and try to shut down the computer without it?
If you want to replace the motherboard , you can get in touch with our Warranty team if they are still under warranty, but if the problem is being caused by another device, the issue will continue.http://www.intel.com/p/en_US/support/contactsupport or submit a web ticket at the following URL
Please explain exaclty what is the issue that you have encountered. You were reporting that your system won’t shut down, do you mean shut down from within windows? Or a cold shutdown? Please clarify exacly what happens when you shutdown from within windows.
Answering your question: why when I shutdown the computer the computer goes into s5 state?
Shutdown from within the operating system would put the system in the S5 state/system shutdown; you can check the following link for more information regarding the S5 state.