3 vibrating when turn on my xperia z1

I think its water damage.can't power on my device without connecting wall charger or computer.when connect my phone charger it shows red led and The Sony logo would flash and then a big battery logo would shows up when power on.when connect my computer and then power on that LED shows blue light with 3 vibrations.

How can i fix this?

What're the 3 vibrations means?