If that fails, avail yourself of repair or replacement options. Continue holding the Option key until you see the Startup Manager, which shows an icon for every drive on or attached to your Mac that contains a bootable. Try leaving them unplugged from everything all night long to make sure they dissipate all residual power and plugging them in again. In the new window, click Hardware and Sound. Type Troubleshoot without quotes and click on Troubleshooting in the results displayed on the left side of the screen. Press Windows key + W to search Settings. It sounds like they're no longer being recognized as USB devices. First, I would suggest you to follow these steps and run the Hardware and devices troubleshooter: a. Don't confuse them with the keyboard and mouse the system was already using.) (If you take them to another Mac, choose "About this Mac…" from the Apple menu and click "More Info" to run System Profiler, then look at the USB listing to make sure they're there. of 2 - windows 10 black screen with blinking cursor after boot up - posted in Windows Crashes and Blue Screen of Death (BSOD) Help and Support: Hello I upgraded to windows 10 from 7 last. To have your macros stored in the startup manager, you need to save the list. Why that is, I couldn't say - try using another one, or taking the keyboard and mouse in question to another machine and running a USB prober of some kind to see if they got fried somehow. The tool just selects the best placement for the mouse between screens and. If it shows up, the OS is not recognizing your keyboard and mouse. Release the Option key when you see the Startup Manager window 3. Hold down the Option key immediately after turning on your MacBook 2. Try starting up with Startup Manager and see if it recognizes your hard drive. It sounds like your MacBook Air is not seeing the internal hard drive. If you could boot, you could go to System Preferences > Bluetooth > Settings and uncheck "Open Bluetooth Setup Assistant at startup when no input device is present." It's checked by default for exactly the stated reason - so the OS can find and use a wireless keyboard and mouse if no wired or paired wireless device is available. Let go of the alt (option) key as soon as the Startup Manager window appears Select your Macintosh HD (you can use the arrow key on the keyboard or click. Sorry to hear about your Mac problems with start-up.
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