hello .. I was trying to change the boot image of the bios through the application on the desktop and during the procedure was shut down the pc ...started a few times, but then he started making 3 beeps at startup without turn on ... Even removing all components ,except the processor, makes these 3 beeps ... What do the 3 beeps?
Luigi, I am sorry for your issue.
Three beeps mean a memory issue. Therefore, you may want to check if the memory is compatible, properly seated, and if all sticks are good. You may also reset BIOS settings to default.
http://www.intel.com/support/motherboards/desktop/sb/CS-010249.htm Desktop Boards; BIOS beep codes
http://www.intel.com/support/motherboards/desktop/dh77df/sb/CS-033192.htm Intel� Desktop Board DH77DF; System memory
If the issue is not related to the memory itself you may roll back your BIOS to the previous version using the recovery method.
http://www.intel.com/support/motherboards/desktop/sb/CS-022312.htm Desktop Boards; BIOS update instructions