Intel DG41RQ boots only on Press of F1 Key

Version 1

    I have purchased a Intel DG 41RQ mother board in Jan 2010 and installed Win XP. Now when i start my system, after a long delay only the beep sound for start up comes and then the Intel logo appears on the screen, but after that it does not continues.  Even if I press F2 for bios set up or F10 for boot menu options, it doesn't work. Only if i press F1 key, my system starts booting and everything works normal after that.  I dont know why it is waiting for the F1 key to be pressed. What should be done for my system to start straightly  without pressing the F1 key.  Can anyone help  me.