|It should power up with the ac adapter. Check it in both ac and dc and see if it what is listed on the label. |
See event viewer.
Set power scheme to always on or the lowest percentage battery you can. See if you can keep it on longer. Might be that the way it determines power is somehow broken, wrong or mis-configured. There are two common ways to use power. Kind of depends on when it was made. The OS also controls that. A live cd like puppy might give you an idea if windows.
See also bios settings.
You didn't need to put more goop on the chips!!!
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10