Very often it's caused by bad memory module. Check if the memory modules are ok by removing the memory modules one by one and see if you can start up your computer.
我記得~Acer在這裡有分公司~
你可以試試先打電話給他們~ Acer America (USA only)
Acer America Corporation
333 West San Carlos Street
Suite 1500
San Jose, CA 95110
(408) 533-7700 – Phone
(408) 533-4555 - Fax
(408) 533-4574 - Sales Fax