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If it does, then you can test each device independently to see if having it attached to the system (by itself or in combination with another device) results in the odd behavior. Disconnect these devices fully from your system (as opposed to merely shutting them down) and reboot to see if the problem goes away.
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Many applications can install these, including virtualization tools, drivers and hardware managers, and firewalls and security tools.Īfter attempting a Safe Mode boot, you can try troubleshooting peripheral devices attached to your system, such as external hard drives, scanners, printers, and secondary displays. If the problem goes away when booted in Safe Mode but persists when the computer is booted normally, then the problem has to do with a third-party or nonessential system extension you have loaded on the system. Once the system has fully booted in Safe Mode, try rebooting normally. Safe Mode also runs a few system maintenance routines that may help clear problems. Doing this turns off unnecessary system extensions and loads the system in a minimal state. One of the very first things you should try if a problem starts repeatedly occurring on your system is to boot into Safe Mode by restarting and then holding the Shift key after you hear the boot chimes. Even if you cannot isolate and fix the issue, performing these steps and relaying what you see to a technician, Apple "Genius," or anyone else helping you may greatly speed up the process and get the problem addressed. When these problems happen, there some basic steps you can take to start troubleshooting the problem. For instance, sometimes specific functions, features, or settings of the system may not work properly, or applications may crash, or the computer may just be running slowly and lag all the time. Unfortunately, many times people have no idea where to start, and problems may seem to be vastly different. When problems happen on any computer there are some basic troubleshooting steps that you can take.