bluetooth is not getting turned on

[MARTIN FR]

i compiled the ble_uart_app project it got downloaded in to the NRF51DK but the bluetooth is not getting turned on ,usually the output of this example is LED has to be turned on for every 2 sec but it is not happenning and i dont understand this issue but if i load the blinky example it works fine, can anyone suggest me how to solve this issue and enable bluetooth

[MARTIN FR]

yes , i followed the procedure suggested by you, and i ahve installed the SDK version 7 ,softdevice nrf51822 7.3.0 but now i ahve reinstalled everything, and change the softdevice to 8.0.0 after that i downloaded the ble_uart_app example but it is not functioning properly

one important thing,

i able to succed the ble_uart_example to work for certaint imes today and after that i downloaded the button examples from the github it is not functioning thenfollowed by the ble_uart_exmaple is also not functioning and i dont know what is the problem