I got a Lenovo ThinkPad L440, and it turns on, but no screen, no booting. It does however beeps, not the five short ones, but the “five short-pause-five more short-pause” way, which (supposedly) indicates a different error than motherboard error. Allegedly it was “set aside and not used”, and when taken out yet again years later, it didn’t work. It does produce a different beep code if the memory is not present (don’t remember the exact one), and also produced a long beep until I replaced the CMOS battery right after the “regular” ones it did.