Vincea11

I'm having an issue with my Atari XEGS. It's been sitting in an attic for longer than a decade when I decided to pull it out and fire it up. When I powered it on, the standard memory test appeared. The 2 ROM bars appear red, while all of the small RAM blocks appear green. I haven't tinkered with it in any way, and I wouldn't really know where to begin if I had to. Is there a simple fix to this issue?