High pitched sound insprion 9300

How about another power cord or another outlet first to verify?

cheers ...

Sounds like cpu whine. RMclock used to be amazing at fixing it. It doesn't support anything past the E core 2 quad series though...aka pre-feb 2008 only....could still give it a shot.

With it you can decrease the voltage and such.

Just so you know, it's always making a whine, it's jsut sometimes more audible if it comes down to 19000hz or so.

I really doubt it's the 'dc' jack, and since your cpu is around that area, it's probably that, and yes windows 7 might have a different power profile telling the cpu to run at a different voltage than what's set up in the bios while having no load causing that to stick when it goes into the low power settings, and therefore causing the whine, thankfully it means you can eventually fix it.

By the way, I've had this before and fixed it with RMclock utility. ****ing amazing piece of free software.

eah we know about all those :P They are pretty much the required things for working with dells, other than a lot of patience and a strong urge to not kill yourself when they break all the time.
For RMclock your cpu HAS to be supported and since demitri hasn't been working on it since I've been on those forums, that means only laptops with cpus and chipsets pre-early2008 will work.

For RMClock, be sure you downloaded word for word, RMCLOCK UTILITY beta 2.2 (RC3), or 2.35 (I use 2.2, it seemed to work better)

Then for relief play around with it. :P

You can do it without running the HLT command, but if you absolutely must, you can use that as a last resort, and it SHOULD kill the ringing sound by putting the cpu under some load all the time.
HLT command works well, but it's a bit annoying to work with. The cpu power it uses will be freed up upon using a program, but your temperatures will be higher than usual, by a couple degreesish. HLT command is found in the management tab.


The ringing is actually caused by a bad resonance at around 18khz, our upper limit of hearing. In order to push this resonance higher you need to kick the cpu out of wanting to go into low power mode, change the voltage / frequency it uses at low power mode, or what I do, all of the above and all that I have listed. Completely works.

That can be solved by the following;

-Keep the cpu ACTIVE even a teeny bit! Best way is to have the usb hub on all the time

- Change system power settings over to rmclock's control, and change the preformance in rmclock to always on.

- Prevent the cpu from going into low power mode by disabling the pop-down / pop-up controls, and disable c4e c5e sleep states (they are the ones that cause the issue)

-Change some of the voltages by about 0.025V, I found that to be the best spots, but the upper ones should be fine, what I have listed is for undervolting, but it seems to work great for the whine as well.

Make sure your cpu is SUPPORTED if you see a crap load of stuff blanked out, it's either not activated, not correctly installed or not supported. Theres a few ways to force it to activate through the registry, but only a couple settings will work if your cpu isn't supported. message here OR on RMclock's forum if there's issues.

My settings are here. Thats after unlocking everything and a LOT of tinkering.
Please note that this worked for me and all testing was done under a pentium 3, C2D and Core Duo platforms that had mild to severe whine (C2D the worst)

But for a quick fix, I know that HLT command works, and amazingly well. My settings avoid increasing cpu temps and will stop the cpu from dropping into its "enhanced/annoying" mode. It might nessicarily not work for you though, so if it doesn't work again, HLT command all the way, a few degrees matters to me, but to you it's probably nothing compared to sweet ear release. (Just keeps the cpu under some load)

This should maybe be stickied for future use, just throwing it out there, unless smth is already up about it.

babog2001, you're running a laptop that's at least 4 plus years old. My diagnosis without actually hearing for myself is that you've got a bearing that's crapping out in one or more of your fans. They spin fastest when first booting-up, slowdown, then speed-up again later when things get too hot.

Forget the under-volting fan controlling apps. Instead try this test. Unplug your GPU fan and boot-up your machine. If the noise is gone that was the culprit. If the noise is still there then plug back in your GPU and unplug your CPU. If the noise is gone it was the culprit.

If the noise is still there when the fans are unplugged then you've got me stumped unless it's coming from one of the speakers (then you may have a short that's causing it).

I hope this helps,

Ciao

Edit: Don't forget to run above tests quickly, just long enough to hear the noise or get into Windows. You don't want to be running without fans for too long and fry out something that's working.

Sounds like you have an old motherboard, have you check if there is any busted electrolite capacitor near the power section. You said you unpluged everything does this include the hard drive...motors on hard drives can cause a high pitch. unplugh speakers, check cpu fan.

good luck

It COULD be that, but the fan bearing makes a different 'whine' then the cpu does. It's similar to the whine ram makes if you listen really closely to it, but much more audiable. ~17000-18000khz.

I'm really surprised that the HLT command didn't work. For my C2D, pentium 3 and Core duo it worked immediately.

You should definately go with those guys suggestions, it's hard to discribe a certain type of 'whine' on here.

I'll look into the unlocking of all the options and how I did it when I have a tad more time, you can probably find it, just type rmclock unlock options registry in google, you might get smth.

There is indeed no 2.5, that was my royal screw up. I did mean 2.35 for latest compatibility but now that I know your cpu, try to get a version that recently supported your cpu maybe? For me the latest version really sucked and nothing would work well, so I stuck with version 2.2 RC3 beta.

Yeah my instructions are better for a C2D. And from what I see you don't have any low power options at all. For mine I did and they were ACTIVE before I adjusted them all off.

Another good idea if you do the things the dudes suggested above is to actually go to the RMclock forum and post it there, those guys have gotten the cpu whine question alot over the years, even combing through the forums there woould be beneficial. Be sure to go through what RMclock supports and see if your cpu is there, but those forums are definately better than here for JUST rmclock stuff.


Another question, does this sound happen ALL the time? Cause the cpu whine for the core 2 duo only occurs when it goes into low power settings while idling. Aka. Does this happen while playing a game or smth using all the cpu juice? In that case HLT command might not work. Again though, I'm not the BEST person, I've just used it a ton, Dmitri on the RMclock forums knows exactly how it works and what's supported for that function...just cause it turns on doesn't mean it works, same with unlocking all the options.

Hope you can quell that ****er down.
myke

Also did you do everything "I" suggested too? Like keeping a usb device plugged in? For the core / 2d series at least this buzzing is some capacitors related to the cpu apparently as opposed to the actual cpu, apparently, fix should be the same though as I mentioned, stop it from going past the C1 sleep state.

If you tried the 'fan' fix, go here for more alternatives for the cpu whining.
http://cpunoise.shrtl.com/pmwiki.php?n=Main.Fix

mayyyybe its a cap. Iunno. worth a try though, I've reached the limit of it being cpuwhine if you tried all those options. pretty sure your cpu is supported by it.

How about another hard drive? Try boot the comp and run it from a CD (Ubuntu disk per example)? The noise can be from these area ...

cheers ...

Any news?

Have you ever thought about putting some plastic between the caddy and the drive? Kinda insulate it from the internal housing. same type of plastic that you see by the ram modules separating the board and the ram. Give it a try with the next drive and see.

cheers ...

Yeah Im thinking this will be useful in the future if fixed. I don't want to suggest any radical things that might break ur mobo. Just some IC chip acting funny....you COULD attempt to sound proof it if you found the chip with some foam...might help, and loud music :P