I have a Dell Latitude E6410 that will not boot up. When I press the power button, the power light lights up blue, the wifi light comes on, and the HD light blinks a few times and stops. I have tried putting in the windows 7 repair disk. The disk drive tries to run, but nothing comes up. The screen stays off the whole time. I have tried moving the RAM to the other slot with the same results. I have tried RAM from a working 6410 aswell. I have tried resetting the BIOS by unplugging the watch battery and leaving the laptop battery out and power cable unplugged for a hour. Holding the power button for 15 seconds or longer. Same results. I have also tried a different bios battery. I also checked the processor. I have tired keeping the battery out and holding the power button while plugging in power. When doing this i get the num lock blinking while the caps lock and scroll lock stays lit which dells manual says System board error 1. Reseat the processor.2. Replace the system board.3. Replace the processor. It appears the motherboard has issues. My question, is there a way to boot the bios from a flash drive since there is no way for me to get into the bios to set to boot from usb? Any other suggestions are welcome.