Question about Toshiba Satellite M40-S417TD Notebook
This notebook has not even a power led , is it possible to check input voltage ,with adaptor connected ,at the terminal that connects to the motherboard ,with a multi meter ?. If i know the power is getting that far then i i can check another on / off switch after that i guess there is only the motherboard that can be faulty. It is completely stripped at the moment, apart from memory / cpu and cooler still on motherboard.
It states you are not getting no power on your lap top computer :
No power or computer does not turn on Cause: No power from the computer can be caused by any of the below possibilities.
Third-party hardware If additional hardware has been recently added to the computer it is recommend that you temporarily disconnect that device or devices from the computer to verify they are not preventing your computer from turning on. Note: If the computer was working fine before you added the new hardware, removing the third-party hardware did not resolve the issue, and the computer is not beeping but is turning on, please see our POST troubleshooting document CH000607.
Bad Power cable Verify that the cable supplying your computer is not bad or damaged by using another power cable. If you have a standard CRT monitor, this cable can be used in place of the computer power cable. If you have a portable computer or laptop, when the cables are plugged into the laptop you should see a power light or battery charge light. If this light is seen, this is a good indication that the power cable is good.
Incorrect power supply If you are building your own computer or if the computer has never turned on since you purchased it, it is possible you are using a power supply that does not supply enough power and/or the incorrect type of power supply. Verify your power supply meets the requirements of your motherboard and processor.
Bad battery If your computer is a laptop or portable computer that utilizes a battery for mobility it is possible that the battery may be causing your issue.
Posted on Jan 17, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
If voltage is present then the battery is a suspect, if not the motherboard charging circuit has problems if adaptor is good and there is no charging.
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