Why is my Lumia 510 not opening installed apps?

[WPCentral Question]

why is my lumia 510 not opening installed apps

why is my
lumia 510 not opening installed apps i downloaded from the market

 

[pankaj981]

Re: why is my lumia 510 not opening installed apps

Would you mind performing a soft-reset and then try again?

Press Volume Down + Power till the screen turns off and the phone vibrates, then you can release both the keys.