Question about IBM ThinkPad R40 2722 Notebook
After pressing the power button, computer doesn't power up. The battery light is lit and there's another symbol lit as well. i'm not sure what that symbol is for though. It's left of the battery light symbol. It's looks like a circle with a z in it.
Batteries can develop a dead short and cause a no start. Try starting without the battery. Other things you can try is checking the power supply with an ohm meter,or plug it in and stick it in your mouth, but me personally, I'd use the ohm meter. Also check the memory, a faulty memory chip can cause this. If none of these work, them I'm afraid the problem may be with the power management chip on the motherboard. If the pm chip is malfunctioning, then motherboard replacement is your only option.
Posted on Jun 28, 2008
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Posted on Jan 02, 2017
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