I have a backup battery on my NAS server so that if I lose power for a while, I can shut the server down. We lost power for 10 minutes so I decided to shut it off. Now, it won't post. Details:
- When the power button is pressed, the case fans turn on for around five seconds and then turn off.
- There is one green light on the motherboard initially and then after 20 seconds (or so), there is another light that blinks at a slow regular interval (BMC light I think).
- No VGA output.
- Hard drives not spinning up.
- Unplugged all hard drives.
- Replaced PSU. No change.
- Accessed IPMI and tried to firmware. It sat on this screen for 10 hours.
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- Removing / exchanging RAM. I have two 8gb sticks, but it does the same thing with one or both sticks.
- Removed CMOS battery, unplugged from wall and let sit for a while, tried all this again.