pc wont detect hard drives and stuck on boot post message. it will detect unless I power off and on again help

so when go to sleep and turn off my pc, unplug it from AVR.. and
after couple of hours when turn it on
it stuck on displaying bios post message. and cant detect hard drive...

but when i press the power off botton and power on again.. it can now detect my hard drives and boot normally... why is this happening huhu :( whats the problem in my system

PCchips a45g motherboard
500gb seagate barracuda IDE HDD 7200 rpm
athlon II x4 640 3.0ghz quad core
4gb ddr3 memory
onboard graphics/lan/audio
450w PSU
1 answer Last reply Best Answer
More about wont detect hard drives stuck boot post message detect power
  1. Best answer
    Try replacing the motherboard's CMOS battery:
Ask a new question

Read More

Motherboards Boot Hard Drives Power