testing an HP laptop before selling

Testing an HP laptop before selling I used the HP online diagnostics and all is ok but then there is stability I suppose and how well it is after a while. For examplethe dfi lan party motherboard i hotflashed that went ok for aweek then deteriorated. What is recommended for testing. The HP diagnostics also reckoned the battery was ok and it did recharge and calibrate and seemed to quickly die...it was old however.

geek_olack, Jan 1, 7:17 pm