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What have you done for trouble-shooting so far?
Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point:
Please read this (in particular the section titled "Supply pertinent information for quicker answers"):
Its really difficult to answer such question. What type of error you are seeing? Are you not able to open up any file in your Photoshop?
yea it wont open my computer files
Have you read the two pages to which I posted links?