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I have already replaced the CMOS battery and the normal battery but the same problem as before,it does not want to turn on anymore and when I plug it in it makes an electric ticking sound every second this is even if it is not on yet I have also tried this once with the battery disconnected and then plugged it in again now I had the same problem.I do not understand it I do everything for my computer for example I always plug my pc charging cable in first then the adapter into the socket. Any help is welcome , Lucas Matthys Translated with www.DeepL.com/Translator (free version)

Hi @Lucas Matthys, You may have to start checking the voltages on the motherboard to find out what’s happening. Here’s a link to the schematics that may help with this.