i have a similar issue right now. tried to upgrade working MKIV to V32 and it crashed. so i re-burned a better copy of V32 and try to install it again. no change. screen remained blank. ejected CD. waited for the navi to boot down. unplugged the battery for about 20-25 min.

tried to install V23_CloneCD. no change, but now CD won't eject. I can hear it spinning and I can hear the lazer running, but that's about it.
(V23_CloneCD was downloaded. Unzipped it. Burned on CD-R via x1 /MODE1/2048 using ImgBurn).

Any help would be great.

thanks.