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Hello, I’m working on an HP 15z-cw100 and I’ve taken it apart and replaced the battery as well as the adapter both with brand new ones. The laptop still does not power on. I was thinking about cmos battery but I don’t even see one on this board. The laptop battery died and shut off and the computer since wouldnt turn on. Was wondering if anyone experienced this before? I’m thinking the mother board may have went bad or at least the part on the board where the power plugs in.
Hi @drivel2787 , If the laptop gives no indication when power is being connected to it from the charger, use an Ohmmeter to check if the power connector cable is OK from the jack to the cable plug that plugs into the motherboard. Here’s the maintenance and service guide for the laptop. Go to p.64 to view the necessary pre-requisite steps and then the procedure to remove the power connector cable. Initially you don’t have to remove it, just disconnect it to test it. Sometimes the centre pin breaks internally in the socket which open circuits the +ve leg of the power circuit. If the power connector cable is faulty, the supplier above is an example only. Other suppliers are available online. Search online using to part number only i.e. 810327-006 to find suppliers that suit you best.
I have seen a previous one yesterday, I ended up taking out the memory and giving it 30 secs before reseating. I tried it and it powered up. I think it could be static build-up that I’ve seen mentioned else where as the memory was well seated.
It was mother board I sold as is
