Question MSI laptop keeps shutting down

[MildmanneredMugi]

My MSI GL72 (Win 10) keep shutting down after 1 or 5 minute, it can boot into window but then shutting down after a "puff" noise. ( same with safe mode, recovery mode, window installation, bios setting...).

Things was fine 3 days ago, I was away for holiday and just come back. Nobody touching or using it (I live alone). No gaming during the last 1 year on this laptop, just some news reading before I go to bed (15-30 mins) but I still cleaning pretty regularly every 3 or 4 months.

Try every methods I can find on the internet, still zero luck. Things I had tried:

• Remove battery and run with AC
• Remove CMOS battery, AC and battery to "flush" CMOS battery (?)
• Start computer in safe mode ( still shutdown)
• Same with window recovery or installation
• Remove HDD and run with only SDD (that has OS)
• Remove both HDD and SDD ( it didn't boot into window but still shutting down)
• Try other HDD (have OS)
• Clean the laptop and apply new thermal paste
• Clean the RAM
• Change RAM socket

Anything I should try before bringing it to the repair shop? I honestly don't think it GPU related, is it because of the mainboard ot CPU?
Thanks a bunch.

 

[webworkings]

I would take it to the shop. You have tried just about everything I would try before having someone take a look at it.

 

[Nashsafc]

Are there any USB devices connected to the laptop, if not then yes it's likely to be a problem with the motherboard or CPU. If you've got a esd wrist strap connect to ground yourself and have a look inside the laptop to see if the capacitors are in good condition, see if you can replace the CPU on that motherboard. You can always try using a second hand CPU for a day then return it if it still hasn't fixed the problem, if that works then you've diagnosed a CPU problem.

 

[MildmanneredMugi]

Thanks for the help, I just hope that it isn't the motherboards. Replacement of those laptop can be costly.