RAID0 is a performance feature that divides your data evenly between 2 (or more) drives; perofrmance is enhanced by having multiple drives serve up your data in parallel. If you truely lost a drive from a RAID0 array then you lost your data. RAID1 (mirroring) or RAID5 (parity protected) are the RAID schemes needed to provide for protection in the case of a disk failure.
I don't mind losing data at all. I prefer to keep it though, but not an important thing. Anyway, it said only RAID 0 failed. So how do I correct the problem so my PC can boot properly?? Please help, step by step is much appreciated.. I know very little about PC.