Hello,
Take the system out of chassis; remove the memory looking for beep codes. If the motherboard gives beep codes proceed with a BIOS recovery test:
Desktop Boards — BIOS update instructions
The latest BIOS version can be downloaded from the following web site:
If the system is completely dead, proceed to test with a different power supply and if still no response replace the motherboard.
I went through the entire troubleshooting manual with no luck. Called customer support yesterday and after going through the exact same troubleshooting guide, ended up sending it in for a replacement today...
I have exactly the same symptoms as yours. POST 10, CPU Hot and rebooting. So frustrating!
The board may in fact be defective, but the symptoms your describe are indicative of a short circuit somewhere causing the power supply overcurrent sensor to trip. Typically this is the result of improper installation.
Some common problems:
An extra or misplaced chassis standoff in the case making contact with the motherboard circuitry. The only way I know to check for this condition is to remove the motherboard from the case and manually verify the number and location of the standoffs.
One or more of the grounding "fingers" from the rear panel I/O shield is misplaced and shorting a contact in one of the back panel connectors. When I built my DZ77GA-70K system recently I found shield alignment issues with both the HDMI output port and one of the USB2HC ports. Use a bright light when inspecting the rear panel ports for this condition as some of the contacts are extremely small and difficult to see clearly.
Were this happening to me, I would remove the motherboard from the case (leave the CPU, CPU heatsink/fan and the memory modules installed) and place it on a non-conductive surface next to the case. Connect the 24 conductor main power cable, the 8 conductor ATX-12V power cable. Verify the green "standby power" LED on the motherboard is lit. Pressing the power switch on the motherboard should cause the motherboard to start and run long enough to complete POST (there will be error beeps, but right now we just want to see if the thing will stay running long enough to complete post). If that appears successful, reassemble the PC, taking care to avoid potential shorts, especially with the grounding contacts on the I/O shield.
If the previous behavior persists (rapid power cycling) the CPU may not be properly seated in its socket or one or more of the retaining pins on the CPU cooler may not be properly set (or the mounting screws improperly torqued if using a third-party cooler).
Another condition that can cause reported behavior is when one or more contacts in the CPU socket are bent or out of position, and shorting or in contact with the incorrect pin on the CPU. Even if you were to remove the CPU, inspect the socket with a bright light and hand magnifier and identify a potentially bent contact, correcting this condition in the 1155 pin CPU socket is probably not a user level repair. If you find this to be the case, I probably would resist mentioning this to your vendor when arranging return/replacement of the motherboard.
I called Intel today and the engineer advised me to bring my mb, mem, cpu and psu to a shop to have isolation done. It is confirmed that the mb is dead. What a disappointment for an Intel product. Seems like I have to contact Intel again for a replacement.
Did they give you any diagnosis beyond that the board "died"?
Nope. I think because he cannot even get it to boot. He removed the CPU to check. Reinstalled, power on, nothing. Switched mems, nothing. Switch on return ro BIOS, nothing. Confirm dead?
how is it? have you gotten your board back?
hi, an update...
after many calls to intel support and numerous trips to the computer shops (wasting time, parking charges, petrol and restricted zone charges and not forgetting an extra dz77ga-70k motherboard that i bought just to troubleshoot!) i finally found the problem. it was the memories causing the post led code 10!
i was using corsair vengence 2x8g, part number cmz16gx3m2a1600c9 (cl 9-9-9-24). using them in singles and in dual channel causes the trip. i am now on g.skill f3-12800cl10d-16gbxl (cl 10-10-10-30). it now boots like it should.
hope that this information will help you in solving your issue too, since you are also using corsair vengence cmz8gx3m1a1600c9.
cheers!
I ended up sending it in for a warranty replacement. It's on its way back now...
My memory is supported (Intel� Desktop Board DZ77GA-70K — System memory), it sucks that you bought some that didn't work.
it says cmz8gx3m1a1600c11 is supported not c9 that you and i have. i have 2 sticks of it. so you may want to consider changing your ram if it post code 10 again on your replacement board. let us know. thanks.
you HAVE to be kidding me...all this work for 1 digit? 
not joking. my corsair rams work fine in another board.
