My laptop fan is always on and on high speed with noise. I have oil the fan bearings and clean the vent but still. I went to hp support to download the bois but didn't find it there.

Fans usually wind up pretty high and slow down once the OS has loaded. The fan itself may be filled with dust and/or have a dry bearing. Well, if you're comfortable with taking apart your laptop,, usually keyboard off first, you might be able to see the fan or at least part of it. This is where an old toothbrush or your wifes soft long bristled old makeup brush will come in handy to gently clean between the blades of the fan. Get it as clean as possible, put your keyboard back on and test it. If it still makes noise, then its probably a dry bearing in which case you'll have lots more to take apart to completely remove the fan. you might be able to get some light sewing machine oil to the bearing and try it again. Otherwise, go to a computer repair shop for a new one but, they rarely ever go bad. Just get REALLY dirty. And don't forget to clean on the inside of the fins too with that toothbrush.

Hello,
The reason for the high fan noise is that the CPU is starving for cool air and is getting too hot. You should blow the dust out from the fan area as best you can with compressed air. Another option is that the laptop may be too close to the surface and can't breathe, try raising it off the surface and see if that helps. One more possibility is that the fan's bearings are going bad and the fan needs to be replaced. There are some programs (not to forget a possible BIOS feature) that allow you to control the fan's speed. Try going to hp's website for your laptop and see if there is one.

Good Luck!
Rich Lilja

Really need more information, but my guess is dirty fan. If fan is blocked by dust, it may make noise and may run at high speed all the time because the CPU is overheating. If CPU gets hot enough, the laptop will shut itself down without warning. If dust is the problem, get some canned air. Before blowing into the air vents, try to spot where the CPU fan is and gently insert a toothpick to block the fan and prevent it from turning. A long blast of compressed air can spin the fan too fast and burn out its delicate bearings. Blow air from underneath and also from the side vent until air blows clear. In some bad cases of dust, the bottom or top cover must be removed to get it all out.

Blow air to clear dust from the vents.

or

open up and clean & oil or replace the internal fan. Spare fan can be ordered from HP spares.

If there is nothing hitting the fan blades and the fan makes a grinding noise then the fan bearing is faulty. You may be able to place a drop of oil on the bearing under the label in the center of the fan and if this does not work then you need to replace the fan.

Before messing around with fan speed, I would clean the computer. Use compressed air to blow out the vent slots in the underside. Many times, fans must work harder if there is a lot of dust there in order to keep your computer cool. I just had to do this for a client yesterday. A clean computer will run quieter.

Try to clean your fan with anti rust oil, maybe due to old age the mechanism inside your fan is already clogged.

http://podnutz-hdlaptoprepairvideos.blogspot.com/

Check your TXV outside just like you do inside. Strap temperature sensor to outlet of TXV, disconnect the bulb.and let run 5 min, Get temperature reading, then put the bulb in your hand and watch the bulb open up. Next stick in a cup of ice water and watch close.

Check your 4 way valve for proper operation.

Do not hit accept unless you can give 100% good feed back.
If you need more help Please post back.
Let me know how it went.

The Noise is coming from the fan. Look at the Pic below (Fan vent at right top)


If you really think you can manage to open and clean it that would be great, otherwise use a vacuum at medium speed to **** out all the dust which is causing the noise.

Try to clean the cpu fan and also the door of thermal, it might be dust cause that noise.