Boot device led is red

Hello i have a mb asus p7p55d pro with and intel i5 750 2.6gh. Yesterday suddenly stop working. it stuck in post screen and the boot device led is red. I cant access bios or os. i have unplugged all the cables and left only the needed. Also i have remove all the drives. i have reset cmos. Any opinion?
Reply to savvas_sk8er
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More about boot device led red
  1. 2009 motherboard model may need battery replaced.
    Reply to Calvin7
  2. Tried new battery. Still the same. Any idea?
    Reply to savvas_sk8er
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