IBook G3 (A1005) Shuts off during boot

I recently purchase a used iBook G3 (model A1005) from someone on eBay. I was hoping to set it up for my wife. However, it doesn't fully boot up. The battery lights show that it holds a charge, power cable appears to work. It starts up, makes the nice sound, goes to the Apple logo and spinning dial...but then it shuts off. I am kind of new to Macs so any help would be appreciated.

Does it have a DVD-capable optical drive? Most (but not quite all) Tiger install discs were DVDs.
Ideally, you need both the original system CDs as well as the retail Tiger install disc.
I wouldn't buy any discs for it until you determine if that would have a chance of doing you some good.
Will it start up in _Safe Mode_?

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IBook G3 (A1005) Shuts off during boot

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