Compaq Presario CQ61 fan complety doesnt work

February 24, 2011 at 10:51:23
Specs: Windows 7, Intel(R) Celeron(R) CPU 900 @ 2.20GHz
Hello, i have a Compaq Presario CQ61 i had this laptop for a while now nearly a year. But once the laptop fan stopped working completely, i can still go on it but i get worried about the heat. Then after a couple of days the fans suddenly start working again. But just recently it happened again fans completely do not work but still can do stuff. Is there anyway i can fix this? PS. My HP warranty has finished so can't send the bloody thing back

Don't know is this is any help but this is my temperature of my CPU.

Core0: Lowest; 57c Top; 93c


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#1
February 24, 2011 at 11:03:51
The fan inside laptops usually spins briefly while booting, then switches off after a short time and doesn't come on again until the bios detects the cpu temp has gone above a certain temp - it cycles on and off as you use the computer.

If you are certain the fan never comes on.....

Have you, or is it possible anyone else has...
- dropped this laptop,or otherwise subjected it to a physical jolt ?
- spilled liquid on it, or exposed it to liquid such as rain, or sprayed it with liquid ?

Has there been a power failure event when the AC adapter was plugged in since the fan last worked ?

How old is this laptop ?
If it was new when you got it, and if it's still within it's warranty period, take it to a local place that's authorized to work on it's brand and have them examine it.

In any case, if there is nothing else wrong with the laptop, or in any case, the fan must work. If it is no good it must be replaced.

"...this is my temperature of my CPU.

Core0: Lowest; 57c Top; 93c"

93 C is way too high.

If the fan NEVER spins and the laptop eventually produces one or more error beeps and soon after shuts off automatically because the CPU gets too hot, you MUST fix whatever problem it is that is causing the fan to not spin at all.

There is no software setting or bios setting that would cause a working fan to never come on (unless it has NEVER come on since it was new, and in that case the bios MAY need an update ).


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#2
February 24, 2011 at 11:20:20
Thanks for your quick reply.
Here's my answers:

- Laptop Fan does not come on at all on boot. Last time i was on a game and then the laptop fan started working.
- I did drop a little bit of liquid on the laptop keyboard about two months ago few letters don't work but fan still worked at the time.

EDIT: The laptop never gets any beeps or errors at all. Also how do i update the BIOS?
-I once dropped me laptop a month ago on the side of the battery charger and then the battery charger did not work so had to buy a replacement. But fans where still working at the time
-I got this Laptop in December 2009 and warranty has expired. I don't really want to pay to expand the warranty but would if i have no choice.


Thanks again :D

EDIT: How do i update the BIOS? My laptop has never made any error beeps and switched off when the fan is not working.


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#3
February 24, 2011 at 14:13:14
" -I got this Laptop in December 2009 and warranty has expired. I don't really want to pay to expand the warranty but would if i have no choice."

You can't get an extended warranty unless you get it when you buy the computer, or in some cases you can get it within a short period (e.g. 30, 60,or 90 days) after you buy the computer.

"- I did drop a little bit of liquid on the laptop keyboard about two months ago..."
"- I once dropped me laptop a month ago..."

A technician who posted on this site says the most frequent reason he sees for needing to replace components because they're damaged is due to dropping the laptop or spilling liquid on it. The damage that was done doesn't necessarily show up as symptoms right away.
Personally I haven't messed with many laptops, but I have one of someone else's, an Acer, about three years old, that was dropped at least once .
It produced NO video from the built in display after it was dropped initially, but it worked fine for months with an external monitor, then the USB ports and the keyboard stopped working. I could see the mboard was damaged along the hinge side when I opened it up, I tried re-seating everything, but the symptoms did not change.
It still boots Vista fine but you can't Logon to Windows.

"Laptop Fan does not come on at all on boot. Last time i was on a game and then the laptop fan started working."

So the fan did work previously. That indicates the bios version has nothing to do with the fan not coming on.

"The laptop never gets any beeps or errors at all."

When nothing is wrong, you normally hear only one short beep while booting when the POST has completed successfully every time you boot the computer, or at least every time you boot the computer from it's Shut Down ( off ) state. Were you hearing that previously ? Are you hearing that now ?

"Also how do i update the BIOS?"

Flashing the bios is the riskiest thing you can do to a computer.
If something goes wrong you can easily end up with a computer that will not boot at all. The cheap flash chips used for the bios can only be flashed a small number of times, and they can physically fail while flashing, sometimes the FIRST time you attempt to flash the bios.
The flash chip can be replaced,but most bios chips these days are soldered into the mboard rather than in as ocket and removable. Experts can replace asoldered in bios flash chip,but it can easily cost you morte than buying a used working laptop mboard that has no passwords enabled.

Having said that,
- it makes no sense at all to flash the bios to cure a problem that was not always there
- laptops rarely need to have their bios updated by flashing it with a newer version
- if you find specific official info that flashing will cure a problem you've always had with the present bios version, then it's okay to flash the bios, if you are careful and do it the right way
( If it's damaged now, you have no way of knowing for sure whether the laptop would have produced the error beep or beeps and shut down the mboard previously unless it had somehow overheated the cpu, such as if it were used in bed and sheets were interfering with air getting into and out of the laptop's underside.)

"Tags:
Hewlett-packard Compaq presario cq61-420us notebook"

Compaq Presario CQ61-420US Notebook PC
(Home support page)
http://h10025.www1.hp.com/ewfrf/wc/...

Software & Driver Downloads - Compaq Presario CQ61-420US Notebook PC
http://h10025.www1.hp.com/ewfrf/wc/...

Latest bios update - no mention of your no beeps or fan problem
http://h10025.www1.hp.com/ewfrf/wc/...

Previous bios update versions:
http://h10025.www1.hp.com/ewfrf/wc/...

No mention in those other two of your no beeps or fan problem.

You COULD flash the bios to the latest version if you want to take the risk, but I'd say there's a 99% chance that won't cure your problem - your laptop is probably damaged.
There are directions where you get the bios updates.

What would I do in your case ?

Get the Maintenance manual from the HP web site.
Using that as a reference, open up the laptop, remove the fan, and connect to a power source to see if it works - it probably uses 12v DC.
If it DOES NOT work, find a replacement fan on the web and order it - use the HP part number on it to search with.
If the fan DOES work, that probably indicates the circuitry that is supposed to turn it on and off inside the laptop is damaged, probably on the mboard itself if that's what it's cable is connected to. Search for a used mboard on the web that has the same HP part number, that has been tested or is known to work and has no passwords enabled.

In the mean time........
- you could get one of those laptop cooler gadgets such as one that is flat and has two cooling fans and use that under the laptop at all times, check the cpu temp frequently to make sure it's helping
or
rig up an external fan and a duct to blow into the base of the laptop all the time you're using it - the best place is the opening where you can see cooling fins, check the cpu temp frequently to make sure it's helping.

You can load a hardware monitoring program in Windows where you can see the current readings for everything you can see the current readings for in the bios Setup. Some laptops may already have had such a program installed by the brand name. If not, there are freeware ones (hardware monitoring programs) on the web you can install, such as SpeedFan or CPU-Z, although you may need to tweak them to read ~ the same as in the bios.


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