Raid0 failure, reason?

[YoungBlood]

Switched PC on this morning to be greeted with a message that one of my raid drives has failed.
So it would'nt boot up.

I went back into the Raid manager and saw the image below, all I did was delete the raid array and reset it. Restored a system image (thankfully made a win7 repair dvd and it restored an old image flawlessly) and its back up and running again.

My question is, why did one of the raid drives get knocked out so to speak?, it seems to be in perfect working order. Also would there of been a way to repair the array without deleting it and resetting it?

If I do nothing now, should I expect it to happen again?

 

[YoungBlood]

Intel onboard raid controller. Yes there was a blue screen crash right before, did'nt think anything of it although it was the only blue screen I've seen in Win7.

Powered PC on, blue screened, did a restart and the raid0 had died.

I guess that atleast means the harddrives are ok and it was some other failure.

So it was simply a case of a blue screen crash at the worst possible time?