Adobe Photoshop CS5 has stopped working

Every time I opened my Photoshop it always hanged and there is a message appeared that adobe Photoshop cs 5 has stopped working.
It always happened every time I opened it. What do I need to do so I can use my Photoshop again?

Adobe Photoshop CS5
Adobe Photoshop CS5 has stopped working
Windows can check online for a solution to the problem.
Check online for a solution and close the program
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