Question about HP Compaq Evo Notebook N800c PC Notebook

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Speed reduced suddenly

My machine started slowing down suddenly,fan speed varrying

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Try to check the fan first. Oftentimes, the speed variation is a manifestation that the fan has accumulated to much dust. Clean it. If the problem persist try replacing it. The lack of proper ventilation inside the machine could hamper its normal routine thus slowing down the system.

Posted on Apr 06, 2007


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When switched on, it starts At Maximum speed. You can`t slow it down to a slower speed.

If this is for a Mac and is after a hdd swap you will need to perform a SMC reset (google how to do as different for each model). If you have changed to a SSD you will need to download a fan control program and manually reduce speed of fans

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Sounds to me that the brushes burned as a result of the low speed and the fault may actually be a winding's problem in the main com, insulation on the winding's may have broken down resulting in slow speed. I think this may be time to look for a new router on ebay it would probably be cheaper than getting the com rewound if at all possible.

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Computer shuts down

Make sure Windows Update is turned on. For Windows 7, Vista, and Windows 8 there are Updates that resolve some hardware glitches such as the one you are experiencing.

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How do I control fan speed?

Keeping the fans clean is especially important, because the fans blow out hot air and bring in fresh air to cool down the laptop.

Fans attract dust, however, which can slow them down, resulting in a hot laptop.

If the laptop overheats, vital parts can cease functioning altogether.

Consequently, keeping your laptop's fans clean is crucial.

The fan speed on a laptop can determine how it operates consistently and reliably.

You can slow it down or speed it up, based on the circumstances.

For instance, slowing down the fan speed may be useful in reserving processes or during a prolonged slow time.

Speeding it up is beneficial in keeping the laptop cool during ongoing use or high-traffic times. For the long term, find a happy medium for regular use, so you won't "psyche" out your computer by constantly adjusting the settings.

Click on the Start menu and select "Control Panel." Next, choose "Performance and Maintenance."

Select "Power Saver."

To slow the fan speed, locate the slider next to "CPU Processing Speed" and slide it down by moving across to the left.

To speed up the fan, move the slider to the right.

Press "Apply" and then "OK," if prompted.

Hope this helps

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Sounds like a strip down of the fan and lubricate the bearings with sewing machine or thin cycle oil will do the trick.
Hope that helps.

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How to have more mileage without compromising the power and speed???

Some of the general points are given below if followed will help you a lot on daily basis 1 Cut down on Static running of the engine. Reduce the idling time 2 Do not accelerate with out any reason when you start in the morning. 3 Fill the right fuel and oil. 4 Always run the vehicle on the recommend speed by the manufacturer which is given in the manual provided. 5 Avoid sudden burst of speed and then slowing down by sudden breaking. 6. Keep the tire pressure correct as less pressure burn more fuel and use more power. 7 Clean the spark plugs every fortnight. But once a month is a must. 8 Do not Overload. 9 Real good tip which you may not have been told i.e. When you reach the particular speed and are running it on for some time, reduce the acceleration. This way the vehicle will run without extra consumption of fuel due to the momentum it has already gained. This can cut down consumption fuel by 10 - 25 % depending on the nature of drive, short or long.

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If you need further help, I’m available over the phone at

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When you do processor-intensive work like - streaming videos - the laptop overheats. The fans come on loudly.

When the computer heats up despite the fans, the processor throttles back to relieve the heat.

When you reboot your machine, it stops performing intensive work, giving it a chance to cool down. It's not restarting that fixed the problem it's the fact that the laptop cooled down.

So here's what you do. Get an air duster and blow all the dust and gunk out from your fans. They are most likely clogged with dust and that's what's causing your cooling problems. If there are large dustballs in there, use a tweezers and pull them out. Get as much out as possible.

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