What if your N97 or N97 Mini didn’t boot up or got crashed when you turned it on and keeps hanging on the start up screen, and you don’t know how to fix or repair it. This is just the same problem I’ve encountered when I received my N97 Mini. After few hours of using the phone, I turned it off and then I recharged my phone. But when the time I turned it on, it keeps hanging on the start up while on the Nokia logo and I can’t turn it off either. So you will be force to remove the battery. One thing I did was I searched on the web and learned that this was maybe an old firmware’s bug and then it turns out that you are left with one resort, hard reset. How to hard reset your beloved N97 Mini or N97 (also for 5800, X6, other Symbian^1):
Update(23/October/2010):You can find lot of resources to fix Nokia N97 and N97 mini here in symbiandreams.com. 1) How to Hard reset your Nokia N97,Xpress Music 5800 etc- a guide 2)How to make your Nokia N97 faster ,7 key points after 1year experience with N97
Steps on this page. Just click this link. Or you want to see it on video.