Working on older HP Mini 110 that won't power up, no lights, no fan, no nothing - power adapter is good, battery is charged properly, have reseated RAM, still nothing. CMOS battery is dead, suspect this could be cause but seems odd to me that laptop wouldn't at least boot up - there are multiple reports of a dead CMOS battery preventing a laptop from booting up so I'll try a new CMOS battery.
New CMOS battery did nothing, open to suggestions, suspect MOBO..