To do this, disconnect your external hard drive from the computer. I am using a WD My Passport 2TB Drive and would like to understand the light pattern on the product. Why is Windows system always accessing and writing or reading from HDD drive? b) I can hear the hard drive spinning It was perfect until yesterday, but today it keeps flashing a white light in front of it very quickly (each 1 or 2 seconds). Hi My Western Digital My Passport is not being detected. Before having this fast blinking light and drive unrecognizable in windows it had frozen up the computer while transferring a file, so I had to power down the system by holding the power button. To give it a “reset”. Do not worry if your WD external hard drive suddenly stops working, fails to respond or cannot be recognized while the light is blinking. However, a) Lights appear on the drive. This does not mean that the controller board is talking to the drive motor or the heads. I dropped it about 2 feet onto a hardwood floor, but it was not plugged in. I use it very rarely and to only hold my music and photos. Since then the drive just blinks fast, about 3 times per second, which according to WD's lousy documentation means "activity". Learn more The automotive industry is undergoing significant transformation with electrification and the development of autonomous vehicles. The hard disk activity, which normally can be monitored via hard disk LED on computer’s casing, will show almost non-stop continuing operating, with LED blinks non-stop. Every blinking is accompanied by an intern spinning sound. Then reconnect the external hard drive … RIGHT before that happened, my computer died while it was plugged in (so it was improperly ejected AND dropped). Put the HDD in the fridge for 6 hours, which may influence the state of the hardware/capacitors. what does blinking light mean ? The light on the drive only blinks after plug in the powercord. Western Digital iNAND memory has become an important part of automated driver systems with local storage to fit the demanding data needs of the vehicle. Now turn off the PC for at least 1 minute. Follow effective solutions here to fix this issue and repair WD external hard drive to work again without losing any data. Suggested methodes: 1. It is a My Passport Western Digital 3 TB Drive. Shortcircuit the drive for a second. I have used this with my mbp for a few years - no problem. Any comments would be helpful.Thanks in advance… Symptoms: Known as “Blinking Light” problem. I moved and couldn't locate factory power/ data cable, so used others that fit. There was no fall or energy issues as far as I know. Question: Q: WD External Hard Drive blinking blue light. and what does prolonged constant light with a blink mean. There is no noise from the drive through spinning. My Western Digital external hard drive just stopped working. what does constant light mean ? Quite often, issues such as a Seagate external hard disk light blinking but not being detected can be fixed by simply rebooting the computer. Frequent hard disk I/O read/write activity by Windows will undoubtedly reduce system performance. I recently uploaded some photos onto the device and a number of songs, but after disconnecting it and trying to reconnect it again, it's not being recognised on my PC (Windows 8) and I just have a flashing light which appears once every second. Icons appeared on desk top but before I could open I powered down to do other work. WD external hard drive cannot be recognized with the light on in PC? The light is blinking because the controller board is talking to the motherboard disk access chips successfully. I have had a 1TB WD Elements external hard drive for a few years now. 2. It's not showing up in Device Manager. Reduce system performance mean that the controller board is talking to the motherboard disk chips. 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