Lenovo g500 laptop shuts down randomly

[saiprawin]

My Lenovo g500 laptop shuts down randomly,sometimes with in 2min or 45min randomly.i thought of overheating & cleaned the fan & replaced the thermal paint.I normally use cool pad but still not change.what can be the problem.could there be a hardware problem? Please suggest me

 

[velo3100]

It could be the battery is loosing its charge.

 

[saiprawin]

It could be the battery is loosing its charge.

 

[saiprawin]

It could be the battery is loosing its charge.

 

[saiprawin]

Thanks for your suggestion..but I checked it...with/without battery....its not the problem

 

[velo3100]

Could be the hdd is corrupted.

 

[saiprawin]

Could be the hdd is corrupted.

 

[saiprawin]

No...its fine....

 

[velo3100]

Maybe your power jack is faulty?

 

[saiprawin]

No my friend...i tried it

 

[velo3100]

Maybe something on the motherboard is not fixed properly.

 

[saiprawin]

I took it 2 the service centre...he said ic in the mother board is the problem...