Hi
So i have this laptop Vn7 571G which i bought 2 years ago and it was working fine but since 2 days it's been turning off after exactly 30 minutes it doesn't shut down it just turns off no matter what.
It's not for overheat i checked the temperature
Tried to keep it in bios but no result
Tried to keep it in the boot menu
Tried to update bios
I scanned for viruses but there was none and counting that it goes off in bios aswell i dont thing its a virus.
Can anyone help me please 
Edit: One Thing i noticed is that it takes more time on starting up, before it was like power, lights on (keyboard and mouse external ones) and pc on but now its like power, lights on flash 2 or 3 times and then turns the pc on