5300s have a reputation for being unreliable because they are unreliable. My 5300 oddly powered itself off at the most annoying of times (such as when I had almost completed Oregon Trail...). I opened it up and couldn't find anything wrong, so I don't really know what was causing that. I have since sold the floppy drive module so its not really useful anymore, and I have much better Macs in my collection to spend time/money on.