My $0.02

Some 主板 has a +5V standby 指示燈 and it should be on if the power supply is OK. Put a jumper on the power switch pins and remove it to simulate a power switch on if you suspect the 啟動開關 is bad. Do you smell anything burning in your case? Test your power supply with a ATX power supply tester if you have one. Disconnect all devices like hard drive, DVD drive and PCI cards but not graphics card, CPU and RAM. Maybe the power supply is overloaded, power supply efficiency drop when they age. Shake your case to make sure there is no loose metal object that shorted your motherboard.

所有跟帖： 

• 謝謝您的詳細解答和建議 我將朝這方向檢查。 -bkl- ♂ (0 bytes) () 08/04/2010 postreply 16:51:24

• 問題已完滿解決，十分感謝上述所有給予幫助的朋友們！ -bkl- ♂ (220 bytes) () 08/05/2010 postreply 15:25:46

• 應該 應該， 善哉， 善哉~(^o^)/~ -弓尒- ♂ (0 bytes) () 08/06/2010 postreply 05:49:10