Maximus V Formula Led Blinks

[PesimistzOmbie]

Hello. I have a problem I can not solve. I read topics about this issue but did not solution for my problem.

Motherboard does not open. All LED lights flashing.

- I cut the power, I'm waiting for one day. I try again. Result is the same.
- I pull out all the hardwares, power connections, battery. I try again. Result is the same but I'm waiting a few hours, Motherboard succesfully running but the same problem occurs when I close power.
- I tried to reset the bios is not a solution and my bios latest version.
- I dont have extra psu, do not try.

What causes this?

Sorry my english bad. Thanks for the answers.

[PesimistzOmbie]

Anybody else not have any idea?

I made a few different experiments in today. Problem exactly "shutdown" command. If the power suddenly cut, mobo not lock up. But I close computer by normally, mobo lock up and I need to wait open for many hours or days.

[PesimistzOmbie]

I'm very happy today. I found the problem.

Problem: Power Supply

My problem solved.