installed galaxy theme over working MIUI rom. i get the white screen of death however, i can hear the phone loaded up just fine. any suggestions?
Boot to recovery and restore a nandroid backup. Probably only option at this point is to reflash everything.
Shouldnt take a long time especially if you just flashed MIUI over the top of SS4.8, and have a backup of the 4.8. All of your apps and setup will still be there. If it persists, it could possibly be your recovery having issues?