The delete button on my MacBook Pro Model A1150 has stopped working which doesn't allow me to chande file names or delete or change browser headings. I highlite file names or browser headings in blue but when i hit delete button it doesn't work. Is there a way to fix the delete button or any button shortcuts to delete headings. Tried highlighting headings & then hit cmd & delete to trash but again , no luck. Would appreciate any help to resolve problem .

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