dell poweredge 2950 and UPS went down overnight please help

In our school this is what i met this morning 

the UPS has 3 servers connected to it and the middle server is not coming on

On the UPS the line color is green, the bypass light blinks orange and the fault light is red.

we are using dell poweredge 2950 servers and this is the error on the middle server 

e1000 fail safe, call support and e1257 5v pwrgd 

any idea what those errors means and how can i fix this???

please help urgently

ok so i decided to check the other 2 servers that are on and i saw this message on the first server

Is it talking about the UPS battery that it is connected too????

"you should change your battery or switch to outlet power immediately to keep from losing your work 

On the UPS the line color is green, the bypass light blinks orange and the fault light is red.In our school this is what i met this morning 

the UPS has 3 servers connected to it and the middle server is not coming on

On the UPS the line color is green, the bypass light blinks orange and the fault light is red.