I have a latitude E6420 which will not boot and the diagnostic codes leds and beeps are not listed in the handbook
hdd led flashing, power light off, wireless led solid on , what does this combination mean? (not listed)
it then beeps, 1 beep, 3 beeps, 1 beep, and repeats, what does this mean? (not listed)
the system will give the correct led code if the memory modules are removed
is it a system board issue?
no activity on lcd display
Thanks
Peter
