it was working fine till yesterday i have tried many solution but nothing works

Laptop imformation-

Dell vostro 2560

closed as unclear what you're asking by Tom Brossman, guntbert, Eric Carvalho, Thomas, Zanna Jan 7 at 12:11

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    What have you done since yesterday when it worked? Maybe you have Fn-Lock dis- or enabled? – PerlDuck Jan 6 at 14:22

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