HP Pavilion DV4-100ea: Fan problem so Bios update-easy or not?

  buel 11:28 16 Jul 2011

Hello, My gf has the above laptop that has always had a very annoying problem with the fan being on all the time and being quite loud. Apparently this is a common problem with this, and similar, models.

I have done the usual regular cleaning with a can of compressed air but it doesn't fix the problem for long.

I spoke to my local computer store yesterday and he said there were two options: 1, buy a laptop cooler with a built-in fan (but to me this doesn't sound like a problem solver as there will still be a fan on in the background. 2, He said that he could update the bios. I asked him how this could make a difference and he said perhaps the laptop was giving out an incorrect temperature reading, making the fan come on when it wasn't needed.

They said they would charge me £25 for this.

I would like to know two things please: 1, Is this a likely answer/is the £25 worth it? 2, Is it possible to change/modify the temperature reading IF it is incorrect or is it just a case of this being done automatically with a bios update.

Thank you in advance for any answers.

  gengiscant 12:03 16 Jul 2011

To be honest it is unlikely that a Bios update will make any difference to the fan. after having a look at the manual it does not look like it is possible to remove the fan easily to either clean it or replace. My old Toshiba was just a matter of removing 4 screws to access the fan bay.

I do not know if there is a setting within the bios to control fan speed.Here's a bit more reading. http://www.ehow.com/how4547829adjust-laptop-fan-speed.html

  Fruit Bat /\0/\ 12:16 16 Jul 2011

You could update the BIOS yourself quite easily

HP Support click on your OP system and then on the next page select BIOS Heres how to flash link text

However a failed BIOS update could render the machine useless so £25 isn't bad If the shop gets it wrong then they have to put it right whatever the cost.

  buel 12:30 16 Jul 2011

Thank you both.

Please may i ask, if a bios update goes wrong, is it possible to 'undo' the update and get everything back to 'normal'?

  Fruit Bat /\0/\ 12:57 16 Jul 2011

Not always which is why I said £25 isn't a bad price

However your data will not be lost as you could still connect the HDD to another machine to retrieve it.

BIOS flashing is much easier and safer nowadays (I lost a motherboard about 10yrs ago trying to flash a BIOS) and is likely to be sucessful 99% 0f the time

Usual BIOS flash failures are due to lost of power during an up date i.e. battery running flat (so do while on mains power) or power cut.

  gengiscant 13:26 16 Jul 2011

Again it is unlikely an updated Bios will have any effect on fan speeds.

  buel 14:14 16 Jul 2011

Hi gengiscant, Do you think the computer shop man was talking bull when he mentioned the possible incorrect temperature errors?

  sharpamat 14:34 16 Jul 2011

Mr Bule with someones elses computer again.Do you mean 1000ea as you have listed it as 100.

Its more likley to be blocked vents causing overheating than BIOS, full details on price of a new fan are http://www.batterycentury.com/hp-g50-100ea-fan-p-166732.html Which also gives details of getting to the fan You could with the model number check with HP to see if the BIOS needs udating

  Fruit Bat /\0/\ 14:37 16 Jul 2011

HP has botched up the thermal management design for many of its laptops and it may simpy be that they have taken the easy option to run the fan all the time.

Try choose CURRENT POWER PLAN (the battery symbol shown below on the bottom right hand side of ur laptop) -> LEFT CLICK -> MORE POWER OPTIONS -> SELECT A POWER PLAN (HP recommended) -> CHANGE PLAN SETTINGS -> CHANGE ADVANCED POWER SETTINGS -> PROCESSOR POWER MANAGEMENT -> MAXIMUM PROCESSOR STATE -> CHOOSE 50% for both on battery and plugged in.

  buel 14:43 16 Jul 2011

Sharpamat- Mr Bule with someones elses computer again....Nope, not again but with my gf's computer, as i have detailed many many times over the last 18 months.

  buel 15:05 16 Jul 2011

Ps- yes i meant 1000ea, thank you. Also, Fruit Bat, i shall try that right away...thank you!!

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