If the good disk is still working within the functional Raid array then you can boot into Windows and rebuild Raid 1 using the Raid controller panel.
If you can't boot into Windows,you have a big problem here,the Raid 1 array might be corrupted because Raid 1 is designed to make sure at least one disk is still functioning and if you break & recreate a new Raid 1 array, you might be asked to format your disks & lose all datas. Hope you've backed up all datas & best of all a restorable system image.
You can try getting another identical disk to your replaced disk,take the good Member 0 disk out ,put those 2 new disks in and either delete & create a new array or just create a new array and afterwards put back the Member 0 disk in & see if the new array sees this old disk and boots up then you can rebuild Raid 1 with one of the disks.
If all fails then you might try this data recovery tool http://www.diydatarecovery.nl/