Hello there, so i got that problem recently when i open a browser my pc goes off as if it were unplugged first time it happen it was about 1 hours of browsing on the net...then after almost day when i run a browser the laptop goes off after 1min-30sec, i tried to scan my pc with malwarebyte found nothing and i run tdsskiller too found nothing then i decided to format my pc after that still the same problem but when i run my pc into safe mode it run normal and i use browser with no problem. Sorry about my bad english... if anyone need more information or something i can try just comment and thanks 
My Computer
At a glance
Windows 7 Professional 64bitsintel core duo 2 cpu T6570 @ 2.10 Ghz 2.09 Ghz4 gbIntel chipest family
- Computer type
- Laptop
- Computer Manufacturer/Model Number
- HP
- OS
- Windows 7 Professional 64bits
- CPU
- intel core duo 2 cpu T6570 @ 2.10 Ghz 2.09 Ghz
- Memory
- 4 gb
- Graphics Card(s)
- Intel chipest family
- Browser
- Firefox