Can you startup with the install DVD? If not then you've a real problem. Can you see the date if you can startup? If not it's the battery. Paul Moortgat On 19 Aug 2010, at 17:32, John Gilbert wrote: > My G4 has given me about two years of faithful service until recently. > Beginning about a week ago, it began crashing, giving me a black > screen message stating I needed to hold the restart button, turning > it off. Then restart. > > Before last week, this had never happened. > In the past week, it has occurred wayyy too frequently, almost three > or four times a day. > > Is my power supply going? > Could there be another reason? > > -- > John Gilbert > gilbert2330 at earthlink.net > 407-462-8673 - c > 407-628-5856 - H