![wd for mac powers on when plugged in then shuts off wd for mac powers on when plugged in then shuts off](https://appletoolbox.com/wp-content/uploads/2017/01/External-Drive-Chargers.png)
I have to admit this latest wrinkle has me a little concerned, but it wasn't a huge problem. Then I plugged everything back in, rebooted, and all was fine (MyBook always mounts fine on the first go when I reboot my Mac). I ended up shutting down my Mac and having to manually unplug the USB and power cord from the MyBook as it didn't shut down with the Mac. I turned the drive on and the drive started spinning up - but it kept spinning and I couldn't shut it down to do my second mounting attempt. Recently I did encounter a problem where I couldn't do this.
![wd for mac powers on when plugged in then shuts off wd for mac powers on when plugged in then shuts off](https://tout-ios.com/wp-content/uploads/2020/09/réinitialisation-SMC-Macbook-Air-e1599133081426-1024x453.jpeg)
On the second try, it usually kicks in and I can access it normally until I go to unmount and shut down the drive.
![wd for mac powers on when plugged in then shuts off wd for mac powers on when plugged in then shuts off](https://cdn.thewirecutter.com/wp-content/uploads/2017/10/portable-power-strip-with-USB-lowres-0284.jpg)
![wd for mac powers on when plugged in then shuts off wd for mac powers on when plugged in then shuts off](https://i.ytimg.com/vi/7GlETDBybqI/maxresdefault.jpg)
(Since the drive hasn't mounted, this does no harm). I then shut the drive down (holding down the button at back) and it shuts off. The light goes on, the drive spins, and nothing. When I go to turn it on, it will automatically mount, but rarely on the first attempt. You see I leave my Mac on most of the time (in sleep mode when not in use) and as I don't feel comfortable leaving the MyBook running all the time (and it's mostly for backups/lesser-viewed files) I usually leave it turned off. I've had my MyBook for about a year and it's working fine, except that it almost always takes 2 attempts to mount the drive. My Laptop automatic shutdown in few secondsAlthough this thread is a year old, I thought I would add my 2 cents regarding the WD MyBook and issues with mounting on Mac. Laptop Automatic Screen Brightness Is Persistent, No Matter What. Without Power Adapter my Laptop Automatically Shuts Down Laptop restarts automatically after i switch it on Solved! Asus r752s turns on and off automatically every seconds without even pressing the start button over and overĪutomatic power plan change when pluged in and automaic mute when headphones unpluged. MY acer laptop after i power on it perform preparing automatic repair but after some time it doesnt contiune, it leave black Solved! asus laptop wont turn on, also showed "preparing for automatic repair" screen When i turn my laptop on it say preparing automatic repair, the screen goes blank. My power button light dim and my laptop randomly shutdown automatically please help me. My lenovo Z51-70 laptop shutdown automatically after turning on power Is it possible to make the laptop automatic on by just plugin the charger? Power up my HP laptop and goes to an automatic fix. Question Laptop Automatically goes to sleep when movedĪfter I power on my laptop it shows no display but caplock led will get on as well as fan will on and then it automatically sh Question shutdown when power charger is unplugged, turns on automatically when I put it. Question Automatic my asus laptop turn on when charger port plugged in Question Laptop turns off automatically on first few attempts of power on In the end it might be just a motherboard hardware fault in relation to power adapter that there's nothing you can do about it. So experiment a little bit, let us know what you find. If either of them goes bad or is malfunctioning you might experience strange behavior.Īlso, if you have a possibility try a different charger and different battery (if you have same in household or borrow somewhere) Does the BIOS time reset? Does it reset when you just take out the laptop battery?īasically there's 3 power sources for the motherboard ac adapter, laptop battery and CMOS battery (I think newer laptops are beginning to omit this one). do the laptops have functioning battery?īasically, pull out the laptop battery let the laptop sit for a bit then plug in, do you get the same behavior? also, unplug the battery, unplug ac, hold the power on button for 10 seconds, then plug in DC and check what happens. So maybe in your case the motherboard is faulty or BIOS is not configured properly and it does a false start. So, in case with a laptop, I'd think it's a similar issue, it detects AC power, essentially the motherboard turns on at that point. I don't know, maybe they've solved that issue by now, not that it's a big problem. It's similar like if you take a WD external HDD and just plug it in, it will power on for a few seconds then detect that there's no data connection and shut off. I would think this is a BIOS or motherboard design fault.īasically what happens, when you plug it in, there's some circuits that begin functioning like battery charger, some LEDs etc.