Clevo P775TM1-G - Not working on boot (no monitor then shut off)

[Oak]

Hi,

 

I'm having some trouble with my P775TM1-G. It was doing fine and then just stopped working the other day.

The symptoms are as follows:-

 

I turn it on....then,
 

• Black screen, no back illumination, no BTO splash screen.
• Keyboard does it's little light dance for 20seconds or so.
• Keyboard goes black.
• Fans do a little self test and just stay on low, maybe 5 or 10%
• Then the fans spin up to 100%
• It stays in this state for about a 1 min.
• Then the machine turns off.
• There is no caps lock light etc

 

I've seen this post...

 

...which initially filled me with confidence, however, the key difference is that in the post above the machine didn't shut off. 

I've done the following to try and fault find:-

 

1. No Battery with good 330w power, same result .
2. Power drain (no battery, hold down on button for 1min), inc. removing CMOS cell, same result
3. Spamming F2 has no effect, same result
4. Removed all RAM (all 4 sticks) and SSD, same result
5. Reseated CPU, same result
6. Reseated GPU, same result
7. Fn+D on start up, same result

 

Literally the symptoms regardless. I thought it was the GPU at first but since going though the fault finding list, I'm honestly stuck.

 

Any help or ideas would be welcome.

 

Thank you 🙂