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The IBM ThinkPad T43 was released in February 2005. The ThinkPad was designed and developed by IBM from 1992-2005, then by Lenovo from 2005-present. This page includes repair information, troubleshooting, background, and additional information.

Why can't I turn on my laptop

So I have this laptop for sometime now before it used to work but now it don't seem to turn on at all. I've tried to charge it to see if it was a low battery issue but there's still no sign of it even charging. So can anyone tell me what the issue is and if it is fixable or not? If it is please briefly guide me with it too.

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Hi @veevee17316

Here's the hardware maintenance manual for the laptop.

Go to p.42 (48 of 254 pdf) to view the procedure to check if the output voltage from the AC adapter is within the specified voltage range as shown.

If it isn't then it may be that the adapter (or adapter cord) is faulty therefore the laptop is not being powered and the battery can't be charged either.

If the adapter is OK it may be a faulty DC-in cable in the laptop.

Unfortunately it is not shown in the manual but it is listed in the parts list shown in the manual.

Use the manual to open the laptop and then locate the DC-In cable connection where it connects to the motherboard. The other end is where you plug the AC adapter into. Check if there's the correct voltage appearing when measuring between the red and black wires of the cable.

If the cable is faulty search online for the appropriate to your particular model version laptop i.e. 15" LCD or 14" LCD model parts number (see DC in cable part # on p.237 and p.238 to hopefully find suppliers of the part.

If the cable is OK further testing would be required to find out what's wrong.

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First remove the battery and ploy in charger and try to power on the unit. If that works the battery is dead and needs to be replaced. If not then your charger is failing and it needs to be replaced.

Google the part number listed on battery and order replacement from Amazon with 30 day return. Test and see if the works.

If not then you have a post broken inside the laptop. You’ll need to take it to a laptop repair person to fix or if your good at soldering order jack replacement and remove defective power plug and put in new plug and solder in. I recommend a professional do this.

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