Have you ever encountered a system that automatically turns on, when power was just plugged-in in your AC outlet or the AVR was just turned on? Well this may be the same case I experience weeks ago.
Its a socket 775 MOBO, actually the brand is Asrock! I was troubleshooting an intermittent unit, I notice that when I turned on the AVR, the unit automatically turns on and it display a CMOS battery bad. Although the system works just normally(except for the time and date), it is not just normal. So I replaced the CMOS battery, and to my surprise the unit does not turned on automatically anymore,the system now turns on via its switch, therefore the previous problem was caused by a drained CMOS battery.
Strange problem can sometime remedied on an unexpected manner, that's what makes my profession challenging, you will encounter unusual problem all the time.
That's all folks, until on my next post and belated happy new year to all!