Macbook has to restart when i plug in a usb item

ok today while studying a friend plugged in his ipod to get note off it for class well he plugged it in and the computer showed a screen and said "computer must be restarted with restart button or powering down the computer" i can't click anything and i must hold down the power button to turn it off and then turn it back on. then thought it was just his ipod so i go home to plug in my printer to my usb connector well same thing happened again so i tried keeping my usb printer plugged in while powering it on but that doesnt work the message just shows up before my mac fully powers on. so what do i need to do or what happened

Dave,
Thanks for your reply. After four very lengthy tech support chat sessions, the last tech support person (30 July, 2013) suggested that it was probably some sort of conflict with the drivers for the USB ports on my Dell computer. The case number you requested is still open and is: 0184509373.
I spent a lot of time during the last tech chat trying to determine a graceful way to quit the application before using any USB devices. Just clicking on the X to close the window does not close the application as it still shows up as an active process in Windows Task Manager. Our conversation kept getting confused between the Creative Cloud application and the more global Creative Cloud and which you were quitting or logging out of. Adobe should have kept the name “Application Manager” for the application.
After experimenting, I’ve devised the following work around. It’s a nuisance, but it seems to work a little better than just crashing the application. I open the Creative Cloud desktop application and choose “Quit Creative Cloud.” I can then use a USB device without a crash. After disconnecting the USB device, I restart the Creative Cloud application by double clicking on the icon on my desktop. Finally, I can use Photoshop CC and Bridge. If I don’t restart the Creative Cloud application first, Photoshop asks me to register the software again. This puzzles me as I didn’t think the Creative Cloud application had to be running in order to use Photoshop.
Thanks for your attention and assistance.
Charles

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Dave,
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After experimenting, I’ve devised the following work around. It’s a nuisance, but it seems to work a little better than just crashing the application. I open the Creative Cloud desktop application and choose “Quit Creative Cloud.” I can then use a USB device without a crash. After disconnecting the USB device, I restart the Creative Cloud application by double clicking on the icon on my desktop. Finally, I can use Photoshop CC and Bridge. If I don’t restart the Creative Cloud application first, Photoshop asks me to register the software again. This puzzles me as I didn’t think the Creative Cloud application had to be running in order to use Photoshop.
Thanks for your attention and assistance.
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Macbook has to restart when i plug in a usb item

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