Computer dont starts up anymore

Hello everybody,

1 year ago I built my first computer which consists of the following components:

- Inno 3D GE force GTX 560 1 GB DDR5

- Kingston Hyper X 98 GB RAMkit

- Powersupply Codegen 600W ATX 12V

- SEAGATE Barracuda Green 5900.3 2TB 5900RPM SATA III

- Intel 320 Serie SSD 120 GB SATA II

- LG BLueray BD-R 10X

- OS Linux Mint

It been working fine until a few weeks ago and now I cant get anything on the screen.

It says "NO signal".

The last couple of days its been really hard to start up, I had to turn it on and off several times before its I got it on the the screen.

Yesterday it didnt start up no matter how many times I tryied so I took it appart and checked all the connections within and fans running.

I push the memok ok button and the diod lights up quickly and the computer shuts off allmost immediately to start it self up again.

When I then put it together again yesterday I could start it up and use it.

This morning it refused again to start up. When I push the ON button everything light up as usual and fans start etc but its like nothing happens inside, dont get anything on the screen.

Ive had a few incidents with static electricity in the cumputer chassi but it has allways started up. Yesterday there was another incident of static electricity to the chassi and the computer turn off to start itself up again.

I dont now what is wrong or how to fail search it.
Does anyone have any suggestions were to start and how to perform it?

Thank you,