Offline member on RAID-10. How to restore a RAID array?

Question

RAID

Good day, colleagues!
There is a computer, like a server, with the following performance characteristics:
- ASRock H77 Pro4-M
mother - 128GB SSD hard drive, Plextor M5S, PX-128M5S * 4pcs
- Windows Server 2012
Hard drives are combined into RAID-10.
Yesterday there was some kind of problem with the computer - the OS stopped starting. I arrived, I see that the status is RAID degraded and one hard disk has the status occurred (if the memory does not change). I rebooted the computer, the error remained, but the OS booted up.
Today I arrived with a new railway, I found a fallen off railway (by alternately turning off the power from the railway and turning on the computer). Replaced railway and caught Offline member on all 4 disks. I tried to connect the old railway, but the error remains the same.
What to do, where to dig?
PS: Now I'll try to download a disk with Linux and start from LiveCD (I read that it can help). Perhaps there are some other ways to bring the train back to life.

Answer 1

by alternately turning off the power from the railway and turning on the computer

and what for? they killed the campaign ...