That is why you should always use at least a three disk array when employing striping or have a good backup routine. Actually, have a good backup routine anyway.
At a push, you may be able to get the array members working in another RAID-equipped PC by repairing the OS installation to deal with all the many and various driver changes. But... the need for the low-level RAID driver may possibly throw a great big spanner in that one unless the RAID controller happens to be the same make and model.
What is the exact nature of the failure? OS? Or major hardware?