A periodic high-pitched squeak noise coming from a computer, external hard drive, or other electronic device can be difficult to diagnose. The sound may occur only occasionally, making it challenging to identify its source. Depending on the device, the noise can come from a mechanical component, cooling fan, power circuitry, or a storage drive.If the noise is coming from a hard drive containing important data, take it seriously and back up your files before performing extensive troubleshooting.Identify Where the Sound Comes FromThe first step is determining the exact source. Turn off unnecessary devices and listen carefully while the computer is operating. Check whether the sound comes from the internal drive, external hard drive, cooling fan, power supply, or another connected device.An external drive can make noises that appear to come from the computer because vibrations travel through the desk or enclosure. Temporarily disconnect external storage devices one at a time to help isolate the source.Hard Drive-Related NoisesTraditional HDDs contain spinning platters and moving read/write heads. Normal operation can produce clicking, seeking, or faint mechanical sounds.However, a new or unusual squeaking, grinding, repeated clicking, or rhythmic noise can indicate mechanical wear or another developing problem. A periodic noise alone does not prove that an HDD is failing, but unusual sounds combined with slow performance, disappearing files, read errors, or frequent disconnects deserve immediate attention.If important data is stored on the drive, create a backup before experimenting with repairs.Check Cooling FansFans are another common source of high-pitched noises. Dust accumulation, worn bearings, or a fan blade contacting something inside the computer can produce an intermittent squeak.Inspect the computer's ventilation openings and check whether the noise changes when system activity or fan speed changes. Do not insert objects into a moving fan. If the noise appears to come from an internal fan, professional cleaning or replacement may be appropriate.Power and Electrical NoiseSome computers, adapters, monitors, and power supplies can produce high-frequency electrical sounds commonly described as squealing or whining. The sound may change when the system is under heavier processing or when power consumption changes.Try disconnecting unnecessary peripherals and, where safe, testing the computer with a known-good compatible power adapter. Never open a power supply yourself because dangerous electrical voltages can remain present even after it has been disconnected.Check External DevicesUSB hubs, external drives, docking stations, and other peripherals can sometimes generate unexpected sounds. Disconnect nonessential devices and reconnect them individually.If the noise consistently appears when one particular device is connected, that device becomes a strong candidate for further investigation.Monitor ChangesPay attention to when the squeak occurs. Does it happen during startup, file transfers, heavy computer use, or when the system is idle? Recording the sound with a phone can also help a technician identify the type of noise.If the sound becomes louder, more frequent, or is accompanied by data errors or hardware instability, stop relying on the affected device until important data has been backed up.Final ThoughtsA periodic high-pitched squeak noise can originate from an HDD, fan, power component, or peripheral. Identifying the exact source is the first step toward a solution. For storage devices, unusual mechanical sounds should be treated cautiously, particularly when valuable data is involved. Back up important files first, then investigate the hardware or seek professional assistance if the noise continues.

Periodic High pitched squeak noise

If your MacBook Air stopped recognizing your WD My Book, the problem can be caused by the cable, USB adapter, power supply, macOS settings, drive formatting, or the external drive itself. Before attempting repairs or reformatting, protect any important data stored on the drive.Check the Power and ConnectionsWD My Book desktop drives generally require their own power adapter. Make sure the power cable is securely connected to both the drive and a working electrical outlet. Check whether the drive's indicator light turns on.Next, inspect the USB cable for visible damage. Disconnect and reconnect it firmly. If possible, test another compatible cable.If your MacBook Air has USB-C or Thunderbolt ports, a USB adapter or hub may be involved. Try connecting the drive directly to the MacBook Air rather than through a hub or docking station.Check Finder SettingsThe drive may actually be detected by macOS but hidden from the Finder sidebar.Open Finder > Settings and select the General and Sidebar sections. Make sure external disks are enabled where appropriate.If the My Book appears on the desktop or in Finder, try opening it and immediately copy important files to another location.Check Disk UtilityIf the drive does not appear in Finder, open Disk Utility from Applications > Utilities. Select View > Show All Devices.Look for the WD My Book in the device list. If the physical drive appears but its volume is greyed out or unavailable, the problem may involve the filesystem or volume structure.If Disk Utility offers Mount, you can try mounting the volume. If the drive contains important files, avoid selecting Erase, because formatting can destroy accessible data.Try Another Port or ComputerTesting the My Book with another compatible computer can help determine whether the issue is with the MacBook Air or the external drive.If the drive works on another computer, check the MacBook Air's port, adapter, cable, and software configuration. If it is not recognized anywhere, the drive, enclosure, power supply, or cable may be the source of the problem.Consider File-System CompatibilityA drive formatted for Windows may have limited write support on macOS depending on the filesystem. However, this usually does not prevent the Mac from detecting the physical drive.If the drive uses a filesystem that macOS cannot natively access, third-party software may be required. Do not reformat the drive simply because macOS cannot open it if the existing data is important.If the Drive Is Making Unusual SoundsPay attention to clicking, grinding, repeated spin-up attempts, or other unusual mechanical noises. These can indicate a possible hardware problem with a traditional hard disk.If the My Book contains valuable files and is making abnormal noises, minimize further use and consider professional data recovery rather than repeatedly powering it on.Final ThoughtsWhen a MacBook Air stops recognizing a WD My Book, begin with the power supply, cable, port, and adapter. Then check Finder and Disk Utility before considering more advanced solutions. Most importantly, do not erase or reformat the drive if you need the files. If the drive is physically failing or unavailable on multiple computers, prioritize data recovery before attempting repairs.

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