Laptop packed up a couple of weeks ago - it was just cutting out without warning and was dead as a door nail. Identified that it wasn’t overheating so a guy I know round the corner has had a look at it and replaced the motherboard and the internal power cable (?). He has had it twice and both times when I collected it from him he showed me it working fine… then I get it home and try to turn it on and it is totally dead.
Anyone got any ideas what the issue might be? Or where I should take it to get it sorted?