Debugging the Hardware fault

The Power rails are just perfect - No, from the JTAG Connector I am not able to program - i am using usb blaster - its unsuccessful. How do i know whether i have fried the FPGA. But these are extreme circumstances because the board has been working and after a long time when i started testing - i found its not responding.

Could you confirm me certain things : if a bootloader program is loaded - where exactly it resides - FPGA OR eprom. A bunch of 7-8 status LEDS on board which earlier during power quite a# of leds used to blink in different timing cycle almost with 1 and 2 seconds. At this moment only one led blinks 1/second and rest of the leds remains off