Clevo D900K fans not coming on when getting hot

I have searched all over the Internet for help on this issue and I am unable to find anything, so any help and advice anyone could give me would be greatly appreciated.

my laptop is an Alienware aurora m7700 which I have had now for over a year (past warranty). The other day I booted up my machine and after a while I noticed that none of the fans were coming on as it was heating up. I later confirmed this using speedfan to look at temperatures and running a 3D application. so I am now in a situation where either no fans are on, or all the fans are on using the manual override fn+f2 key combo.

I have tried cleaning off all the fans and vents, checking all connections inside, resetting the defaults in the bios, clearing the cmos and also changing the cpu fan setting in the bios from 'auto' to either 'normal' or 'high' but none of these settings have any effect.
Sometimes but rarely when I turn the machine on, the fan over the ram comes on and one of the processor fans. But there on minimal speed and never increase when things start to heat up.

I have run out of ideas on what else I can try, I have called tech support but they don't seem to have a clue.

It seems the temp sensors are working fine as 'speedfan' can read them, and all the fans come on with fn+f2 so there all working as well.

I've never let my machine overheat, I even have it sat on a laptop cooler on max speed all the time during use. I just don't understand how this has come about.

Any help/suggestions on this issue would be welcome, and I'd be very grateful.

Thank you

 

motherboard issue. i had a similar problem with fans not comming on when my D900T was on it's death bed. in my case, the fans worked fine but something on the motherboard died wich made the cpu temps un-readible. it work work fine for one minute after boot up but the cpu temps would only register 1C which of course is not possible so it made the system think it was not heating up and thus the fans would not come on to cool it. bios settings would not work. only fn+f2 worked but the laptop was too loud for normal use. don't matter as the motherboard rolled over and died a short while after that.

 

Eugh

Thanks for the info, I was hoping it wouldn't result to that, although it did cross my mind that the only way to fix this is to replace the mobo. The price tag for the D900K on rjtech being $480! seems a tad steep.

I was thinking maybe flashing the bios might be a good idea to try, before resulting to emptying my wallet.

Alienware dont seem to have supplied it though in the goodie pack that came with the laptop, and the download link on their website for the bios doesn't work. Typical lol.

 

yep i had to go through rjtech and shell out $500 with shipping for my d900t motherboard. all motherboards for these laptops are refurbished as well, fyi. but of course with my luck the graphics card died a few hours after i did the motherboard swap so now i will have to spend about $700 dollars for a gpu and bigger power supply.......

 

what !!!!! 700$ FOR A GPU??? thats nuts??

 

lol i don't need ur luck!

yeah i read on the rj website that it might be refurbished, u would of thought a discount would apply in such cases, but looks like the money's going their way.

lol pray that if I go through with this I don't screw over any other parts in my laptop. I've already had both ram sticks replaced (4 months apart) under the guarantee, they both ended up dieing on me and all memtest programs i tried had most sectors in the red.

Anyway thanks for the info, I'll probably try a bios flash when i can get my hands on a copy. If all else fails may just leave fn+f2 on all the time till the price comes down a bit more.

 

do you thoroughly clean out your notebook:
- fans
- vents
- heatsinks

I just cleaned my notebook today (once a month on average for me)... takes about 30-45min for a full clean out. I use Q-tips, compressed air, and a little vacuuming for some dust.

it gave me 5C degrees better at full load in GPU and CPU temps.

Remember you literally have to:
- open the RAM compartment and clean out the fan there
- open the GPU compartment and clean out both the fan and heatsink... use a flash light and you shall see where the the dust is clogging up the heatsink to prevent airflow.
- open up the bottom of the keyboard & metal panel, and clean out the dual CPU fans.

Lastly, its sometimes nice to re-apply thermal grease (Arctic Silver) to the CPU and GPU.

 

Yeah I do all of that, even dismantle the gpu heat sink to get all the dust out of it. I literally clean out everything as well as my laptop cooler.

I know this issue was not caused through any kind of overheating, my gpu runs roughly in the 60's when gaming with the laptop cooler always on.
It just seems bizarre that this issue even came about. But other than flashing the bios or buying a new mobo I'm all out of ideas.

I just wish fn+f2 went through 2 step ups rather than just max on, cos when surfing the net at the mo its just noisy.

 

i always leave Max Fans all the time, its not annoying.

 

lol want to swap, I've got a laptop perfect for you