Very high pitch screeching noise! help..

Hi guys,

Well I have bad news I'm afraid.. my M17x R3 randomly makes a freaky high pitch screeching noise! It doesn't happen very often, maybe 3 times a week and only for maybe 1 second or 2.

But its bloody loud and definitely not right! I though it was the hard drive but ran some tests and its fine. It feels like its coming out from the rear left when facing the laptop.

Any ideas? Thought I'd ask you guys before going trough the horrible process of Tech Support! Didn't find anything online so far..

Thanks everyone in advance!

 

Im not familiar with where the fans are in the R3 but sounds like a fan bearing going bad.

 

Hey DR, thanks for the post. A fan bearing? Didnt think of that.. but the laptop is 3-4 months old!

Can't believe it could make such a loud noise! Will keep that in mind though thanks.

 

Open it up, take the CPU fan out and have a look over it.

When I got my replacement, I had a similar issue and it turned out to be a sticker which had come loose and got stuck in/on the edge of the fan and was intermittently sticking into the blades so that when they turned it made an awful noise.

Worth a shot and it's not difficult to get to at all.

 

Does your power supply cable connect to the spot where you hear the screech noise, i.e. upper left? After reading hear and there I start thinking its the power supply failing in cases when cpu voltage (and power) is switched. Is this a quality laptop? I ask cause it may be faulty components of the power supply, or a new issue that is not resolved yet even with the best of knowledge we have. Can you disable the wireless for a full day, to rule out interference?

 

The power supply is in the brick which sits on the ground, its a none moving part and would not make a screeching sound. Check your fans, you have one in the left and right side of the computer, honestly just call tech support and tell them one of your fans is going bad it makes a loud screeching sound, a tech will slap a new fan in, honestly it takes 2min to DIY.

 

Have you tried checking if there is any dust on the fans?

 

You didn't read my full post. It does not need to be moving part. Why I am thinking of the power supply? When CPU state changes, rapidly, there is electricity buildup. Poor quality capacitors etc. may lead to a static discharge which will generate hell of a screech. My screech was so loud, that it needs a chainsaw to produce it. And the PC even froze for a second. How do you think fan bearing can cause freeze? I am not talking if it didn't work for hours, but right away. And screech didn't come from the procesor CPU fan. It came through loudspeakers, because the static discharge can find its way there.
Once again I ask, the source of the noise (rear left) does it coincide with the location of power supply? Simply, does the supply cable connect to rear left?

I perfectly understand what bloody loud means here. Can you compare it to the sound connecting to a fax machine, just louder and more screechy? Or connecting wrong cable to a HiFi stereo, brrrrrmmmmzzzzzz. Try this and report how it goes.

 

I had that noise too. A tech came round and a sticker had come off and was every now and then hitting the fan on the GPU.

 

Lets figure out first wether there is a rotating device in the spot where the screech is reported to come from, i.e. rear left. Although, I repeat, a fan, even broken fan, even ripped off fan, can not create that bloody loud screech, and especially go on working after that. I know since I had this screech myself, although only once. By the way, how many fans are in the box?