Hi so I think the USB ports on the front of my desktop PC are eating all the devices that are plugged in.

(I've found with a couple of USB disks I put at the start of the year, were then unusable on any device after wards).

1. If this is the case, what's likely to be the problem, and how do I fix it?

2. What would a good, simple way to diagnose the problem be? I'm a bit scared to put any of my USB devices in, because that sounds expensive. (I'm thinking I might look out for some cheap old disks).