Computer making a clicking or grinding noise? Fan or drive, and why to stop

A computer that has started making a noise it did not make before is telling you something, and the two usual sources mean very different things. A fan that grinds or rattles is wearing out, and you have time. A hard drive that clicks is failing, and every minute it runs is a minute closer to losing what is on it. Here is how to tell them apart, and what to do about each.

Fan noise versus drive noise

• A fan sounds like a buzz, a rattle, a grind or a whir that rises and falls with how hard the computer is working. It gets louder when the computer gets warm, in games, on video calls, or with lots of tabs open, and comes from the vents.
• A failing drive sounds like a tick, a click, a repeating click-click-pause, a faint beep, or a scraping that keeps time regardless of what you are doing. It is often loudest when the computer starts up or when you open a file, and it usually comes with freezing, files that take forever to open, or a machine that will not start at all.
• If the computer has a solid-state drive, it cannot click: an SSD has no moving parts. Any noise from an SSD-only machine is a fan. Most laptops sold in the last several years have SSDs; many desktops and older laptops still have a spinning drive.
• A high-pitched electrical whine that changes with what is on screen is coil whine from the power supply or graphics card. It is annoying and, in almost every case, harmless.

If it clicks: stop, and back up

A clicking hard drive is the read heads failing to find their place on the spinning platters, trying again, and failing again. Each attempt risks scraping the surface that holds your files. This is the one computer noise where the right move is to stop using the machine, not to keep going and see.

• If it still boots, copy what matters most, photos and documents first, to a USB drive or the cloud, and then shut it down. Do not start with the biggest folders.
• Do not run “repair” or recovery programs over and over on a clicking drive. Every pass is more wear on a surface that is already failing.
• Do not freeze it, tap it, or open it. These are internet remedies that end the careers of otherwise recoverable drives.
• If it will not boot, leave it off. A drive that clicks and will not start is a data recovery job, and the less it has run, the better the odds.
• Our failing hard drive guide lists the quieter warning signs that usually come before the clicking.

If it grinds or rattles: the fan

A fan bearing wears, dust builds up on the blades, or a cable has drifted into the blades. It is not urgent in the way a drive is, but a fan that is struggling is a computer that is running hotter than it should, and heat shortens the life of everything else inside. If the grinding comes with the computer getting hot or slowing down, read our overheating guide. A fan that has stopped entirely, with the machine going quiet and then shutting itself off, has moved from annoying to urgent.

Desktops: finding which part is noisy

• A desktop has several fans: the case fans, the processor cooler, the graphics card, and the one inside the power supply. A grind from the back near the power cable is the power supply fan, and it is worth having looked at, since a power supply that fails can take other parts with it.
• A rhythmic click from the front or the drive bay, especially at startup, is the hard drive.
• A rattle that stops when you press gently on the side panel is just a loose panel or a cable touching a fan. Harmless.

What we do with it

For the flat $60 we find the noise, test the drive properly on the bench, check the fans and temperatures, and give you a plain answer. A tired fan gets replaced and the inside cleaned. A drive that is on its way out gets its contents cloned to an SSD, which we usually have on the shelf (see parts in stock), so the fix is often same-day and the computer comes back faster than it has been in years. A drive that is already failing is handled as data recovery first: that work is best-effort, it starts with the same $60 look, and you hear the honest odds before anything further is spent. The $60 comes off whichever repair you choose, with a 30-day warranty on parts and labor.

When to bring it in

Right away if it clicks, today if you can. Soon if it grinds and the machine is running warm. Walk in Monday through Thursday, 9:00 to 5:30, or Friday by appointment, at 746 S Arnold St Suite 3, the black door with our logo on it, straight ahead when you pull in, up the steps. Or book a drop-off online. If you would rather not move a desktop, pickup and return starts at $39 plus the diagnostic, priced by distance, and you see the exact price before you book. Every price we charge is on our prices page.