Here you can follow the steps below to update the driver manually. Update the Hard Drive DriverĪn outdated hard drive driver is also responsible for Seagate external hard drive light blinking but not detecting. Reboot your computer and check if the Seagate hard drive light on but not detected error has been resolved. If it is, right-click the greyed device and select Uninstall. Expand all categories and check if there is any greyed device entry. Open the Device Manager window, and then click on View > Show hidden devices from the top menu. In this case, you need to show all hidden devices. That’s why the Seagate hard drive light on but not detected. Sometimes the external hard drive could be a hidden device in Device Manager. Now, you can reboot your computer and see if the Seagate external hard drive not working no light. Click on OK to save the changes, and then repeat all the above steps for each USB Root Hub on your PC. Navigate to the Power Management tab, and then untick the checkbox for Allow the computer to turn off this device to save power. Then right-click USB Root Hub and select Properties.
Step 2. In the Device Manager window, expand the Universal Serial Bus controllers category. Step 1. Press Win + R keys to open the Run dialog box, and then type devmgmt.msc in the box and hit Enter to open this program. Now, follow the steps below to check the USB Root Hub. If the USB Root Hub is not enabled on your PC, the Seagate external hard drive light on but not working problem can occur. After that, reconnect the hard drive to another USB port or cable and turn on the computer.
Disconnect your Seagate external hard drive and then turn off your computer. If you are bothered by Seagate external hard drive light blinking but not detecting, you can try using a different USB port or cable and restart computer. In addition, there are some other factors for the problem like improper device settings, outdated or corrupted hard drive driver, a virus, etc. What causes Seagate hard drive light on but not detected? One of the most common causes is a bad USB port or cable. What caused Seagate external hard drive not detecting? How to fix this vexing error? Now, let’s explore them together with MiniTool. Many Windows users complain that the Seagate hard drive light on but not detected.
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