My canon rebel T3i isnt being recognized by my computer all of a sudden

I cant figure out why my camera isnt being recognized by my computer. And my EOS Utilitysoftware only has the Monitor folder and Picture Style Editor highlighted--- all ther others are greyed out as in not available. I have used this for 2 years already with no problems

Hi spaghettimark!
Thanks for posting on the Canon Forum!
To help the community and myself determine what is causing this, we need some more information.
What operating system are you running on your computer?
What version of EOS Utility do you have installed?
Are there any devices connected to your computer other than the camera?
If this is a time sensitive-matter, additional support options are available at Contact Us.
Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

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Welcome to the discussions,
try the basic troubleshooting mentioned in this article: http://support.apple.com/kb/TS1538

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its new and i already installed the software and everything....i pluggged the nano in and nothing..though i should mention that it says "do not disconnect" on the screen...
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That's the odd thing; there is no red X.
I left it plugged in overnight and all of yesterday. This morning it was working, but still not recognized on iTunes (I had disconnected and reconnected before I could check it in iTunes.) The when I tried to connect it again it started acting funny - not connecting, cycling through apple/support/battery screens .
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My canon rebel T3i isnt being recognized by my computer all of a sudden

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