What mobo is it. What were you doing before the error started. Sounds like the bios is corrupted. Hopefully you can reflash the bios. Go to the supliers web site (mobo suplier) down load the bios. Put it on a pen drive (may need to be uncompressed) turn on PC with usb stick in. Hopefully the system will detect the stick and Auto install the bios. If that dosn't work you may need a new Mobo