June 14, 201412 yr I recently decided to upgrade a Gigabyte Z68 motherboard with 2700k chip into something that can be better overclocked for flight simulation. The first thing I did was add a Corsair H80. Now, several seconds after the POST beep, a high pitched whine starts to emanate from the tiny Motherboard Speaker. It is constant in pitch, louder than the very loud Corsair fans, and does not appear to be dependent on CPU load. It is continuous, while the computer is on. I have spent the better part of an afternoon trying to get to the bottom of it. I have read many many posts of people who complain of Motherboard "humming". One or two, have identified it as coming from the speaker. All of these topics, on various forums, die out without any definitive answer being put forth. I've experimented with various BIOS settings, and nothing works. I know no more than when I first started. This is the kind of sound that drives a man crazy, so I finally just disconnected the internal speaker. Still, I would really like to know if it is symptomatic of something else, and of course, would like my machine to be fully functional. The computer appears to be functioning normally, otherwise. Anybody have a clue what could be going on?
June 14, 201412 yr Are you sure its not a warning ? Read this when i disable CPU fan failure warning & SYSTEM fan fail warning, the noise stops! what a relief maybe if you shut down warnnings one at a time you can figure out whats wrong - if it is a warning you may have a fan issue or thermal paste issue - you may have even hooked a fan to the wrong header does it sound like this http://tinypic.com/player.php?v=1zxwsgh&s=7#.U5zSWPldV8E Interesting http://www.tomshardware.com/forum/296409-30-gigabyte-ma785gm-buzzing-speaker-sound-related Rich Sennett
June 15, 201411 yr Author Oh My! I had earlier seen several posts somewhere about fan warnings, so I had double checked mine over and over and over. All were Disabled, so I figured it couldn't be a warning from that. The post you linked to was the most definitive that I've seen, however, and I looked at those PC Health settings in the BIOS just one more time.... Disabled, Disabled.... I just now realized that there were two more entries off the bottom of the page! For the last several hours, I did not see that SYS_3_FAN was ENabled, because I was too stupid to scroll off the end of the page. Wow, do I feel stupid. So stupid, that I had previously taken the H80 off again, cleaned the thermal paste off, and needlessly redone that whole messy process, to no avail of course. It was the SYS3 Fan warning indeed. Half an afternoon wasted because I failed to hit the Down Arrow one more time. :( Thank you!!!!!!!!!!!!!
June 15, 201411 yr It's a warning! Go into your bios page and uncheck fan fail warning. You have a speed controller seting and a fan fail warning setting and they conflict. On start up the speed controller stops the fan until everything is warm enough and because of this the fan fail warning is triggered. Super VC10 into LOWI with PF3 at a cinema near you https://www.youtube.com/watch?v=298UDyNmgUA
June 15, 201411 yr I would assume He checked to see if in-fact He has an issue related to the warning Rich Sennett
June 15, 201411 yr I would assume He checked to see if in-fact He has an issue related to the warning It would appear that he might! I only discovered the conflict by sending an email to the gigabyte people!! Super VC10 into LOWI with PF3 at a cinema near you https://www.youtube.com/watch?v=298UDyNmgUA
November 27, 20178 yr I joined this site to reply to this thread, having gone through the same problem. The buzz in my computer came from the motherboard speaker. I could disconnect the speaker and there was no buzz. The buzz is not a random noise. It is a WARNING signal from the motherboard, and intentional. My problem was in the bios. The CPU Fan Warning was "enabled." My CPU fan was working ok, as the CPU temperature was within acceptable tolerance, but from time to time it was spinning just slow enough to set off the warning buzz. Then the fan would speed up, (auto control by the motherboard), and the buzz would go away for a while, then return. So I entered the motherboard bios by restarting the computer and holding down the del key. In the bios I disabled the CPU fan warning, and the annoying buzz has not returned. So, if you have the buzz, you should go into the bios and disable the fan warnings. Do it one at a time if you want to experiment. Yes, if I get a real fan failure my CPU could fry, but I have built maybe 25 computers and had computers since the original IBM PC, and I have yet to see a CPU fan failure. Good Luck
Archived
This topic is now archived and is closed to further replies.