T440p

so i have thinkpad t440p that doesn't powered up for long time and the battery is empty, when i plug the charger and press the power button the laptop doesn't turn on and only the power button light blinking 3 times with no beep sound. i try with no battery plugged too, still same result. is it...

My Gateway FX530S, an older ATX, will not usually boot at all. Before I began to work on it, I tried it one last time (it had been in storage for 3 mo). Surprisingly, it went through all or a significant part of the boot-up before locking up. However, most of the time before the three months...