First I'd check the batteries are carrying a good charge.

After that, I'm afraid it looks like some things gone whumph. I would suggest that, as its an older camera, a professional repair would cost a lot more than the camera is worth.

Should you decide to replace, and budget may be an issue. Go for a second hand camera, best you can or want to pay for from a high street dealer or trusted web site. So at least you get some form of guarantee. Finally, to further linit cost, get a camera which uses the same type of memory card ,can fit in your camera case and uses the same batteries if you've lots of rechargables.