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4920 response Thank's so much for your advice regarding the fan on acer 4920 model. Just another quick question - well questions really. I bought this model for the size of the screen and price. But as i wll be using it for writing/research it is pretty distracting having this fan start up - it does seem rather loud or maybe i am just being a wuss. Anyway i can return it losing about £60 in the process. It cost £350. So my question, finally, is do you know of any brands under £400 that you could suggest with a 14.1 screen that may be a bit quietier. Don't worry i am also looking - and would using an xp op sys result in a quietier fan on any potential purchase? Haven't completely given up on this model as i could by some ear plugs i guess. Any help would be great, Ross

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I don't have any personal experience with other models, i look after 5 Acers, all are atleast 4 years old and running as good as new, if you are not happy, return it as i am on an Acer 5610 at the moment and the fan is not really noisy, different noise on different surfaces; although it cuts in and out every 2-3 or so mins.

Posted on Sep 19, 2008

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I have lost my lead to my acer laptop aspire5100 series model number BL51 19v .474Acan you help.I am a mature age person thanking you Pat

There are two solutions to this problem, Pat.

One is to buy the correct AC adapter (Charger) for the laptop.
Two is to buy an aftermarket AC adapter that will work for your laptop, but will also work for many other laptops.


The above is from a quick search. Your search may be better. Just put Acer Aspire 5100 charger, in your search box.

2) From another quick search,

Would also like to commend you for your intelligence.
Stating the Voltage, 19V, and the Amperage, 4.74A ,is a really intelligent thing to do.

(The charger MUST have 19 Volts for the Voltage. The Amperage (Amp's, or A), can be more)

For additional questions please post in a Comment.


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I have an Acer Aspire 5810TZ with a DVD Super Multi double layer

Apologies for my late response. I've been away for a few days. I got local advice and the problem is now rsolved. Thank you anyway for your interest and offers of help.Thanks again and regards.

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My acer aspire 4920 tries to turn on, the fan starts then power cuts out then it tries to start up again but then turns off completly. Please help i have so much important stuff on there!

there are multiple reasons why your laptop turns on then off after a few seconds of turning it on. It is either your processor is no longer working so it automatically shuts it down, the ram or the on board video. bring the laptop to a laptop service shop for it to be disassembled and have its processor, ram and video card replaced. they will then be able to detect what really is the problem when they test and replace each of them.

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It can be like this

serial: LXAKU0X4828250FC182000

Hope this helps
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here is one helpfull link but remember backup your important data from your system before going in for reinstall

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No this is quite common, more so since dual core processors as they need cooling more often, you may find it even comes on when surfing the net, because there are allsorts of processes going on in the background, especially in Vista models

Your Asus was lower spec and thats why the cooling fan was less noticeable, some laptops require the fan torun 99% of the time, so enjoy your Acer, they are very reliable.

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1 Answer

Loud Fan

Hi, I am afraid that your problem is common to this laptop brand/model. A reason is that it uses AMD Turion64 with reported nominal operating temp at ~50.0?c. At ~55.0? the CPU fan will kick in until the temperature stabilizes which unfortunately takes a long time due to the nature of the enclosed spaces in a laptop. Also lubrication will help improve the fan but will not solve the noise nor the turning on quickly, other than it's a complicated and tedious job opening the unit. Other users of the same model reports positive results by lowering the supply voltage of your process. The process is called "undervolting" and best described in Mr. Dan Zhang's guide at and tried at Hope that this give you an idea and pls post back how things turn up or if you need further information. Good luck and kind regards.

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