Suddenly no power

Hello there tech guys..

i really need help for my annoying problem.. my laptop which is lenovo G450 suddenly No power
what i mean is.. when i open my laptop i can get to desktop without anything problem... like beeps( sounds )
but then.. i think when i open such as youtube.. work for the meantime then suddenly like i don't have a power at all
in simply way the laptop is brown-out ..

i can't use english language at its best so i'm sorry for that..

is this maybe i need a thermal paste? i had done the following steps.

1. FRESHLY FORMAT MY OS (still not fix the problem)

2. CLEAN THE FAN (even it's not really had a jungle dust on it, doesn't work either)

3. USE ANOTHER POWER SUPPLY (ADAPTER FOR LAPTOP) , (still has the problem)

PS.
even i have a battery or not ... same problem..


HOPE COULD YOU GUYS HELP ME WITH THIS PROBLEM

MY LAPTOP IS IN GOOD SPEED.. I MEAN IT'S NOT LAG OR ANYTHING JUST THE SUDDENLY NO POWER

thanks in advance!

 

A computer shutting off is typically an indication of a hardware fault. Most common causes would be the power supply or motherboard.

If was overheating, you would be getting an alarm (ie: beeping) as it shuts down.

 

like i said .. no beeping at all.. just if your're using desktop just unplug it .. so now you can understand what am talking about.. feels like that.

 

and just plug again. then press the power button.. so you could back to your desktop then abrupt unplug agan.. like that.. thats's the problem .

 

sir .. thanks for reply.. but i think fan is in good condition.. and the hot thing.. is not really as hot that you think.. i just replace my thermal paste in processor and ati.. still not fixed the problem? is this somehow the processor its self is the problem ?

 

http://www.technorms.com/40307/5-reasons-laptop-shutting-randomly
since you have ruled out 1. overheating, 3. wrong charger voltage and probably 5. computer virus that means there are two possible causes:
hardware failure
display driver cache

 

thanks for this. but.. overheating i think not.. its not really hot.. wrong charger? my charger is my laptop package charger.. virus? i don't think so.. i just fully formatted my laptop...

 

As noted in my first reply and

There is a hardware fault. Most likely the motherboard or the power supply.


If it's under warranty (which I doubt as you have opened it up already) have it serviced. Otherwise it's likely more cost efficient to simply replace it.

 

huastro, my post said there were two reasons
hardware or display driver cache.

The three reasons you posted about I said did not apply to your situation.

I think you need a better translation program.