Command Key Suddenly Non-functional

I'm not sure how it happened, but all of a sudden I'm no longer able to use my Command key. When trying to enter in shortcuts like Command+T in Safari, all that the computer recognizes is the "T" keystroke.
Is there anything I can do to fix this, or will I have to take it in to an Apple Store? Thanks!!

Well unfortunately I do not know what "whatnot" means so I will ask, have you tried booting the computer into another User Account to determine whether the problem is with your normal account or with the System software other wise?

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              None
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                   6%          WindowServer
                   2%          Finder
                   2%          SystemUIServer
                   1%          EtreCheck
                   1%          hidd
                   1%          mds
                   0%          Microsoft Word
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              139 MB             WebProcess
              106 MB             mds
              106 MB             Mail
              90 MB              Dropbox
              90 MB              WindowServer
              82 MB              Microsoft Word
              74 MB              applet
              74 MB              Dock
              66 MB              DashboardClient
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              4.30 GB            Free RAM
              2.23 GB            Active RAM
              512 MB             Inactive RAM
              738 MB             Wired RAM
              876 MB             Page-ins
              0 B                Page-outs

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