Below is a listing of components within the computer that may cause unusual noises to be generated. To determine what components are causing your issue, verify that lights on your hardware devices, such as the CD-ROM drive, are not on when the noise is being made. If you are only encountering excessive noise when a device is accessed, it is likely that the device is causing your issue. If the noise you are experiencing is occurring the entire time the computer is on, it could be any of the below devices. Distinguish what device is causing the noise by reading through each of the below sections. CD-ROM, DVD or another disc drive CD-ROM and other disc drives may generate noises when the drive is accessed. Disc drive noise should be a soft whirling noise when the CD-ROM drive is accessed and only be generated when the CD-ROM is accessed. It is abnormal for a CD-ROM to experience any of the below symptoms. If you are exhibiting any of the above issues, it is likely that the drive is defective, and it is recommended that it be replaced.

There are several fans in computers that help provide ventilation to the computer's components. Below is a listing of the fans that may be causing noises in your computer. Case fans are fans commonly attached to the front or back of a computer. It is normal for most additional case fans to generate additional noise (usually a low hum). However, you should not expect to hear any clicking noise or high pitched noise from any of the case fans. When this occurs, it is a good indication that the fan is failing or has already failed. Although not installed on all computers, some computer heat sinks may also contain a fan to help with keeping the processor cool. It is also not uncommon for a fan to go from quiet to loud while you're working on the laptop. Most computers and laptops will adjust the fan speeds when the processor is working more, or computer is getting too hot. You should only expect to hear a slight hum from the CPU fan; below are some issues that may cause additional noise from your CPU fan.

See below power supply section. The computer hard drive is a common issue for additional noise. It is normal for a hard drive to produce noise. Normal noises you should expect to hear include a low humming or quiet whistling sound. Noises you should not expect to hear are repetitive clicking, very noticeable humming, knocking, or any hard thump. If any of these noises are experienced, it is recommended that the hard drive be looked at, or you replace the hard drive as it may be going bad. Note: You will notice an increased volume of sound from a SCSI hard drive when it is compared to a standard IDE/EIDE hard drive. Note: If you have an SSD it should never make any noise. When connecting to the Internet or another computer you may hear a loud screechy or high pitched noise. The modem noise is the onboard modem speaker and is the two computers connecting to each other and should only be heard when the computer is establishing a connection with the other computer.

Click the icon to the right to hear how this may sound.best price bosch cordless vacuum cleaner The power supply can cause an excessive amount of noise because not only is it providing power but also provides ventilation to the computer. best upholstery cleaner machineIf the fan within the power supply becomes bad or dirty, it can cause an excessive amount of noise.cleaning wood floors bruce If an excessive amount of noise is coming from the fan next to where you plug your computer power cable into, it is likely that the power supply fan is failing or bad. best value dyson vacuum cleaners

We recommend that you first clean the fan by using compressed air to blow out any dust, dirt, or hair. best vacuum cleaner for small apartmentIf this does not resolve your issue, the power supply needs to be replaced.best canister vacuum cleaner ratingsHow to stop excessive MacBook fan noise Here's the solution to a problem that plagues a lot of MacBook Pro and even MacBook Air owners. I use a MacBook Pro Retina 13-inch as my primary Mac and love it. Until shortly after the time the OS X 10.8.4 update came out, that is. Almost immediately after installing 10.8.4 the fans in my rMBP would run at almost top speed every waking minute. Needless to say, excessive fan noise is extremely distracting and it got to the point where I couldn't hear the TV over the blaring fans in my MacBook.

Point of order: According to a Genius at my local Apple Store, the fans in all MacBooks run any time that it is powered up, but at a very low (and quiet) speed. The fans increase in speed as more CPU cycles are used and when the temperature rises. To troubleshoot the noisy fans, I opened Activity Monitor and sorted by the column labeled "% CPU" to identify any runaway applications, which can shorten battery runtime, affect performance, and increase heat and fan activity, as documented in Apple knowledge base article TS1473. I identified a process called "udb" that only spawned when my rMBP was connected to a Thunderbolt display. It immediately pegged the CPU at over 100 percent and kicked the fans into overdrive. The problem is that simply killing the process didn't help, it would immediately respawn and peg the CPU. The Genius at my local Apple Store narrowed "udb" down to something to do with iCloud syncing. Signing out of iCloud (in System Preferences) effectively killed the runaway "udb" process, but wasn't sustainable long term as a I use iCloud on a daily basis for Mail, Contacts, Calendars and Photo Stream.

The solution was to sign back into iCloud and uncheck all the options. With Activity Monitor open, we slowly turned on iCloud sync items one at a time, and everything was going great (i.e. no runaway processes) until we checked the box for "Documents & Data." As soon as we checked the box for "Documents & Data" the udb process spawned and jumped to the top of the "% CPU" list and the fans kicked on. Unchecking "Documents & Data" made the process go away and the fans spin at a much more reasonable (and quieter) speed. I really don't use "Documents & Data" iCloud syncing on OS X (while I do on my iOS devices) so I'm ok with leaving it turned off for the time being, but the genius suggested that it could be a corrupt iWork file that iCloud is trying to sync. He suggested that if I wanted to turn it back on, to download all my iCloud documents, delete them from iCloud and slowly put them back, while watching Activity Monitor for runaway processes. Please review our terms of service to complete your newsletter subscription