Earlierapex

I need some help guys. (I'm a regular on the 911 boards and just bought a beautiful 2000 boxster for my brother at auction). Anyway, the radio won't come on. I replaced the fuse. Are there any security features, etc.? Any suggestions?
Is it replaceable under warranty? The car sat for a while and the battery is dead, so I don't know if that has anything to do with it.

Also, the power steering makes a *groaning* noise at low speeds. Is this normal? Maybe it's just a little low on fluid. Do I use regular power steering fluid?

Thank you so much, any replies today would be most appreciated as I've got to file any arbitration claims today if stuff isn't easy to fix.

-dc