Press the power button again to turn on your Mac. If the battery is removable: Shut down your Mac. Disconnect everything, including the MagSafe power adapter from your computer. Remove the battery. Press and hold the power button for 5 seconds. Reconnect the battery and MagSafe power adapter. Press the power button to turn on your Mac. Mac Pro (2013) port illumination fails to turn on or off How to Reset Your Mac's SMC The method for resetting your Mac's SMC depends on the type of Mac you have.

Advertisement Ever connected a USB drive or other device into your computer, only to find later that it won’t work? There’s a good chance that the USB port has a problem.

But what can you do about it? Here’s how to diagnose and fix a suspect USB port. USB Port Not Working? Give a Physical Examination Before proceeding, note that you’ll need to be sure that it is the port that is faulty, rather than the device you’re connecting. To establish which is the problem, connect the device to another USB port.

If it works, then the problem is the first port; if the device remains undetected, then you have a faulty device. Bk 2 for 5 deal. If you can’t, it will need replacing. If there’s a problem with your USB port, you’ll notice it thanks to either of these things.

• The device fails to be detected • Your operating system displays an error message relating to the device (removing and replacing the device might solve this) Either way, you should investigate the state of the USB port. Has it been damaged in any way? The safest way to find out is to shut down your PC or laptop. Next, look at the USB port. Is it clean and dust free? If you’re using a desktop, or the USB port is at the back of a PC tower, there’s a chance that dirt, dust, and general detritus might have become embedded in the port.

Dust will reduce airflow, causing your system to overheat. It is particularly damaging to laptops, where The greatest threat for your laptop, except for your coffee mug, is overheating. We show you what you can do about it. Clean out the drive with a can of compressed air. A vacuum cleaner might also prove handy here. Finally, grab a USB cable (or flash drive, whatever) and gently wiggle it around. If the drive is moving and feels loose—typically this will be up and down—then you have a problem.

Fix Broken USB Hardware We’ll look at some software fixes in a moment, but first, what if the USB port is loose? The ports are soldered to a board within your computer. This may be the motherboard, but is typically a secondary printed circuit board (PCB). With regular use, ports can become movable, at times completely unattached.

Often, this is down to the shape of the connected USB devices. While small Wi-Fi, Bluetooth, and even new USB flash memory are unlikely to put any significant strain on the port’s physical connection, older “stick” memory drives are a different story. So are USB cables. Their size and associated weight act as a sort of lever, contributing to USB ports working loose. Replacing a USB port isn’t easy.