This computer was working fine until I went to turn it on recently.It works fine on battery,but restarts or turns off when an adaptor in connected.I have tried another adaptor which makes no difference. When looking on the internet this model laptop,and many other Acer,and Toshiba laptops share a common problem. They are fitted with the notorious NEC/TOKIN 0E907 'Proadlizer' value of 900ufd 2.5 volt. This is a different name for a capacitor. It is used on the CPU core voltage circuit. My first thought was to replace this one item with 4- 330ufd 6.3 volt panasonic capacitors( working solution suggested by many repairers). I measured the AC millivolts on a true RMS meter expecting to read a high unstable value.My meter showed about 9 milliohm when the laptop is battery powered .I expected a higher reading when I connected the adaptor,and got the same results. This leads me to think this 'Proadlizer' is fine,and there is a totally different fault somewhere in the power supply circuit on the motherboard. There are no burn marks on the 0E907(see attached photo) Any help would be gratefully received.