If you got a new motherboard and CPU then you invalidate your point and me and Stephen are still very much correct. IOHEIOJFIOJWEOPKLPCMKQWJ FI9W3F WEIDFJ QOPDFKQWO-DQWJ
When you shutdown Windows, there is still constant power flowing to the motherboard until you unplug it from the wall or switch the PSU off at the back.
I replaced the battery first from my new motherboard before i swapped them over and it sorted the problem, i then put new motherboard in as the cpu socket was different and my old cpu was 1.4ghz and new is 2.2ghz