Laptop turns off ~1 min into boot; (Maybe) not overheating

[Linker]

So my dad has a 5-ish year old gaming laptop that he was using for school... and now it is not working.

We opened it up yesterday to unplug the trackpad cable (it was bothering him while typing), but then when we put it back together.

However, after, when booting up, it will act normally for about a minute, until it shuts off suddenly.

 

We initially thought it was overheating, so replaced the thermal paste. Though, while running, the fan spin up, but then stop, and jumps around. It is never at max speed.

I put an icepack on the heatpipes, for lack of a better cooling solution, but the system shuts off anyway.

I can't actually confirm any temps- windows won't boot fully fast enough to run hw monitor (I hate hdds...) before the system shuts down.

(It also turns off when left in bios, it is not a windows issue)

 

I have also tried:

Booting without the battery;

Reseating the ram;

Isolating Ram sticks

Reseating the cooler;

 

 

Right now it is just the bare motherboard, with cpu/ram/gpu, a wifi card, and the power button attached...

Any help would be appreciated.

[TLCH723]

 Plug back the touch pad cable and see if it will work again

[Linker]

On 7/23/2018 at 7:49 PM, TLCH723 said:

 Plug back the touch pad cable and see if it will work again

I have, and it still did not work, and I finally managed to get  cpu temp reading of 60 degrees right before it died.

[navioooo]

The fan blows at max right?

[GeoffLucas]

Is it possible other components are overheating and causing the shutdown?

 

Also, have you tried removing a couple of RAM sticks at a time and trying to boot?  Bad RAM is unusual, but it does happen.

Edited July 26, 2018 by GeoffLucas
Re-read the post

[TLCH723]

Maybe the CPU/GPU block has too much or too little pressure

[K i a r a]

What are the specs? 
It could be a power problem, Or a dead chip.

[Linker]

On 7/26/2018 at 3:44 PM, GeoffLucas said:

Is it possible other components are overheating and causing the shutdown?

 

Also, have you tried removing a couple of RAM sticks at a time and trying to boot?  Bad RAM is unusual, but it does happen.

I have changed the ram, put the original ram back in (it was upgraded a few months ago), tried different slots... nothing

I thought maybe the mobo was overheating, I'll try to get HW monitor running again. I think it always ran hot, and the original fan died a few years ago.

On 7/26/2018 at 1:18 PM, navioooo said:

The fan blows at max right?

It is not, but supposedly the fan turns off completely until it heats up, though, I haven't used the laptop for the most part.

23 hours ago, TLCH723 said:

Maybe the CPU/GPU block has too much or too little pressure

Would that make a difference? The CPU is PGA and the GPU is soldered. The cooler has been reseated twice now though, and thermal paste reaplied.

20 hours ago, K i a r a said:

What are the specs? 
It could be a power problem, Or a dead chip.

I don't know exactly, but it was a Sager laptop with a 4+ year old laptop i7 w/ 4 clores/8 threads. I think maybe it was 4th generation.

I have no clue what the GPU is, but it was not the normal gaming naming scheme like now. (Probably not good enough)

How could I tell if it was a power issue?

And would it boot to windows mostly normally with a dead chip?

 

 

Thank you all for your help.