Hello Heinz98366, thanks for joining the Intel motherboard Community.
I would like to know if you remember which was the previous BIOS version installed on the board?
Have you tried to do a clear CMOS removing the battery?
Can you try to roll back to the old BIOS version?
I just downgraded to .0446. After rebooting I press F2 and the screen just goes black. I have tried removing the CMOS and the jumpers to no avail.
Heinz9836, could you please try your system out of the chassis using minimum configuration (motherboard, processor, 1 memory stick and power supply)
I would recommend you using the onboard video.
If you are still having problems and you prefer replacing the motherboard, you can get in touch with our Warranty team http://www.intel.com/p/en_US/support/contactsupport or submit a web ticket at the following URL https://servicerequestmgmt.intel.com/webticketui/emailpage.aspx?lang=en-us