CPU usage is below 40%, but my laptop's CPU is hot or maybe overheatin

[sandrock]

Dear forum,

I need your help and suggestions on what should i do about my laptop.

specs: core i7, windows 7, 6 gb ram

Before, my laptop can last for 4+ hours with 100% battery.
But now, it can only last for about 1 and a half hour with full battery.
I'm pretty sure that the battery isn't the problem because when i start up my laptop, the battery displays "100% available 4 hours and 20 mins."
Then suddenly, 2 mins after starting up, my laptop's fan is spinning too fast that i can hear it 2 feet away. And, not only spinning too fast, but also releases hot air. (Meaning the CPU is already hot? or maybe the fan is the problem?)

So can you please share your experiences about this and give me suggestions on what should I do?

and BTW, even I'm not running at least 1 program, and my CPU usage is 30% or less ... the CPU or fan is hot.. and that's the problem.

Thank you

 

[linnemeyerhere]

Sandrock,
It sounds like your laptop could be ready for a deep cleaning. I would open it up and see how close to the intake fan and cooling fins you can get some compressed air and blow it out.

 

[sandrock]

I see, will vacuum work?

 

[jimbo45]

Hi there
Battery on laptops tends to gradually degrade -- it's normal. However you might be able to extend its life by "Re-conditioning".

This means COMPLETELY drain the battery before re-charging it - then re-charge.
I've had several laptops --usually battery s fine for about 2 years or so -- then the life shortens dramatically between charges like yours.

In general it's a good idea to every so often completely discharge and re-charge the battery on a laptop for longer life.

Note also that an I7 is a powerful processor operating in the confined space of a laptop so it's likely to generate a lot of heat. As previous poster says open up laptop and give it a good AIR blow -- (clean --don't blow any more dust into it).

Ensure also that no ventilation holes are blocked when you are using the laptop.

Don't use a vacuum cleaner -- good tool are those cans of compressed air that professional photographers use to clean their lenses / cameras.

Cheers
jimbo

 

[sandrock]

thank you very much for the information i really appreciate it.

 

[linnemeyerhere]

Actually I like locating the exhaust on the laptop and securing the vacuum end to it and then while it vacuums blast air into the intake side with the compressed air, with luck this will free up any dust and dust bundles and allow them to pass into the vacuum.