I got a new laptop/tablet recently and honestly, if I knew it was going to have this problem. I wouldn't have gotten one. I've done many things to try and fix the issue from my research, but nothing ultimately solves.
It is a lenovo yoga 11s running Windows 8 with an intel ivybridge i3 processor combined with intel hd 4000 graphics. I also want to mention that it has a ssd. I believe the ssd could potentially be the culprit as well but I really have no idea. anyways, for whatever reason, (and this issue is posted extensively around the internet) these mobo combos emit a kind of high pitched frequency which sometimes oscillates a bit.
the main solution I found involved using this workaround part fix :
http://support.microsoft.com/kb/975530/en-us which involves adding this regkey :
- At a command prompt, run the following command:
reg add HKLM\System\CurrentControlSet\Control\Processor /v Capabilities /t REG_DWORD /d 0x0007e066
None of these fixes work for me now... but this one seemed to initially. Now it is whining again.
The noise is extremely distracting and bothersome and it seems to also be occuring for other similar cpu laptops so I don't think lenovo is to blame, but rather intel with the chip/motherboard design. The microsoft surface, dell 12 xps, and etc. all have similar issues people are posting about :
It's really noticeable in a quiet room and late at night. In a public place, outdoors or even indoors in a library, or with a television on, it is scarcely noticeable, but it is still there.
So, I have posted about this topic on lenovo forums as well but there are already so many other threads it was mostly ignored. I figured I would try and ask this community for any suggestions. Apparently the issue from most of these links explains the culprit is the power saving c3, c4, etc states of the cpu (ivybridge gen.). The solutions involve :
a.) adding a reg key to disable the lower power saving states
b.) disable cpu idling speeds in power management
c.) navigating to an existing reg key and changing a specific dword value from 1 to 0.
d.) changing the minimum/maximum cpu power/speed in the power management options
I have tried all three and none of them seem to solve the issue. Is there possibly some way i could dignose the concern by forcing the fans on with speedfan perhaps? I don't really understand what I'm doing in speedfan but I would be interested in trying that out.
When I first tried a.), it seemed to work somewhat. My batt life dropped from 4-6 hours to a solid 3.5 and the laptop burned hot. It did what it was supposed to do, and cranked the cpu up to full speed which caused the fans to crank in as well and the laptop to run hot. The high pitched whine was gone (or perhaps just masked by the excess noise? <<<this seems like a likely possibility, but it did really seem like the frequency whine was gone.) Unfortunately, it no longer does this. I keep trying all of the fixes over and over a.) b.) c.) d.) etc. and nothing will make it run hot and make the coil whine high frequency noise stop. I'm not sure if it was from a windows update or what, but I wish I could make the whine go away again. It feels like it's giving me tinnitus. When you hold your head up to the right side of the fan/power supply/usb port it is most audible.
Does anyone have any fresh ideas? I just cannot believe they could release a processor generation with these problems. I assume it is in their effort to find a way to increase battery life in fast processors, but with this frequency whine happening? it is simply not a solution. I would choose a two hour battery span and a hot laptop with no whine over this problem.
Current new things I've tried:
-Updated all the latest chipset/video/usb drivers.
-Updated to Windows 8.1
-Constantly switched between and remodified a.)b.)c.)d.) from above and removed and re-enabled and etc.
Nothing. Does anyone think the SSD could be the culprit instead?
Any other possible solutions I could try? I don't know if this will get read, as I realize it is somewhat long but I needed to explain all the elaborate details that I have been attempting...
Thanks for reading, (if anyone does, lol) and thanks for any suggestions
Edited by nexus666, 03 November 2013 - 07:07 PM.