Urgent Technical Assistance please! Laptop only partially boots before shutting off!

Yesterday my laptop shut off while I was using it. I was just quitting a game in fact and when I hit quit the machine died.

Ever since when I try to boot it it starts fine and then the windows 7 logo comes on the middle screen and starts to load as normal but about 5-10 secs into this the system just shuts off.

I have tried several things.
-Last known working configuration
-Taking battery out and power and holding on button for 20 secs before trying
-Tried different ram
-Tested own ram in different laptop;it was fine
-Tested HDD in other laptop it booted and ran fine
-Ran safe mode - it worked fine
-Formatted HDD in different laptop as laptop would shut off even during a "windows dvd" windows loadup
-Even with the HDD formatted the laptop still shuts down at exactly the same point even from the dvd with no OS installed!

I think therefore I can safely say it isn't the ram,HDD or OS/ driver corruption. So what could it be? GPU,CPU or mainboard!!!???

Any help or advice will be very appreciated as I am totally at a loss here!!

 

Get back into safe mode and look at the device manager. Sounds like your gpu is malfunctioning with the drivers, look for a an exclamation point next to your gpu. Even if one isn't present uninstall the graphics driver and try booting up without it installed. If it boots fine then won't install the driver you have your culprit

 

check to see if you can find the temperature of your GPU/CPU when running in Safe mode. It it's higher than normal then it's possible that under intense heat and some movement of your laptop - the CPU/GPU could have moved slightly little from the heat sink, thus separating itself enough to heat up itself under normal operation to the point of immediate thermal shot down.

... or push down the keyboard where the CPU/GPU sits under it, and see if it would shut down again.

 

Is the fan running? Are your vents clogged? I had this issue on my old Dell (it would boot to desktop and hard power-off in the middle of loading stuff), and it was due to overheating. I blew out the vents with compressed air and it never happened again.

 

Vents are absolutely not clogged and cooling is working fine. Temps were well within control on the day it died as I always monitor them when gaming. Eg 87C max at 840mhz on the gpu. Idle temps for the gpu sit around 39-45C

Temps can't be monitored within safe mode and now the HDD is wiped so no safe mode now either.

I also thought it was the GPU drivers but system restore (did several times) and then complete amd driver wipe using driver sweeper made no difference to the problem.

Problem is I don't think it is thermal shutdown as it wouldn't happen at exactly the same point every single time. I can stay in the bios or in safe mode for as long as I want. I spent over an hour backing up date for example before I wiped the HDD!

Anyways so yeah even with no drivers or OS this problem still happens (ie even with windows installation disk) and at same point. The disc loads the files and then starts to load windows (basically the loading part before it gives you the option to install) and then as if when loading the OS as normal with the windows 7 logo in the middle of the screen the machine shuts off.

I guess there is no harm in repasting the GPU and CPU but I am 99% sure won't help

 

Had another idea although the power supply hasn't shown any visible signs of a problem could it be that during boot the gpu or cpu are loaded a little and the power supply can't deliver enough power? Thing is it dies with battery in too, the battery is a rubbish 4 cell though and is 2 years old. Lasts barely 15 mins and that is when I don't do anything strenuous.

edit: still doesn't work even without battery. and Dies again at same place.

 

Try a new video card, sounds like it's not loading a driver.

 

Exactly what I am thinking. I guess when windows loads the driver the GPU crashes.
Unfortunately GPU's ain't cheap....

 

Eh a lot cheaper than a new system, there are quite a few in the marketplace to choose from. Not to mention Niffcreature usually buys faulty cards to work on.