My computers hard drive makes an occasional buzzing sound. Some days it makes them some times it does not. My computer is not slowing down since the sounds either. I have pinpointed the noise to the hard drive. When the sound does happen though it's very loud and annoying but the computer is sill able to operate and no error messages.
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This could be a sign of a failing hard drive - I would backup all of your important documents immediately to an external drive to prevent you from losing any important data.
As you have already cleaned out the dust , there is a chance that one of the system fans (or the CPU fan) may be faulty or some wires inside your system case might be catching on the fan while it is spinning.
Disconnect all the system fans , so just the CPU fan is left plugged in and then switch on the system and see if the noise has stopped. Then plug each fan back in one at a time to identify if any of them are causing the noise.
Many times when a desktop is making a strange buzzing noise - it is due to a fan malfunction of some sort. Other reasons include a power supply that is faulty or possibly a bad internal speaker.
I would first check the fan(s) for the computer. Start by turning the computer off all of the way. Next, unplug the cords from the unit. You'll need to isolate just the computer tower itself. Next, you'll want to get some compressed air or a vaccuum and gently clean out the areas where the system case fan vents are. If you know how to open the case for your desktop, it wouldn't be a bad idea to make a quick visual check inside of the case for things that may be caught in the fans. Some desktops open via screws on the back plane, and some open with a pull tab/lever.
If cleaning out the dust doesn't resolve the buzzing noise - then you'll need to make sure that the noise is not part of the electronics. If you are hearing an actual electrical buzz and not a speaker or fan noise, then there is likely a larger problem with the computer. In that case - I would take the computer to a certified professional for diagnosis.
Another culprit of buzzing noise may be a CD/DVD drive with a disk stuck in it. Make sure that you have ejected the drive to ensure no disk is stuck in the drive.
when u say hard drive do u mean the computer it self? if so then it's called the CPU not hard drive... hard drive is where all ur info is stored and u can tell if it's the hard drive cuz if' it's messed up it would make a clickin noise.. not buzzin... more than likely it's ur fans.. u should buy a bottle of high power air in a can... and blow ur fans .. thay prob have a lot of dust and dirt on them.. i had this happen to me once and that fix'd it'...
I have the same problem and I found out it was the fan of the video card cause the noise. Ton of users own this computer have the same problem, click the following link and see http://h30434.www3.hp.com/psg/board/message?board.id=HardwareDPC&thread.id=976&view=by_date_ascending&page=1
The hardware problem is cause by the GeForce 9500GS video board that cannot be fixed. If your computer still under warranty, contact HP techniocal support and replace another model or another brand video board, if not,buy another video card and replace it yourself. Remember, don't use the GeForce 9500GS video board, all this video card will have noise problem after a few months.
Please confirm if the noise is coming from the monitor of from the desktop. If the buzzing noise is coming from the monitor - i suggest to request for a replacement. If not it could be a noise coming from the desktop system fan or from the hard drive.
If you hear like a clicking noise coming from the hard drive you may need to run diagnostics on it to check if the hard drive is failing. check with your computer manufacturer is your system still under warranty for parts replacement.