Problem with pro tools le 6.8.1 on a crappy inspron dell laptop

[ZacharyRobert]

I've run pro tools before on this computer but as of buying a new desktop and upgrading to Pro Tools 7.4 I've never needed to use it for recording again, but just recently I found a hallway with fantastic reverb and wanted to record in the hallway. But for some reason my Pro Tools on my laptop won't playback or record, and when I plug in a microphone and turn it up all the way and scream into it, it doesn't even recognize it's clipping or that a microphone is plugged in. Sometimes I even get the DAE error 1115 when starting up Pro Tools, but when I switch the USB port of my MBOX It stops giving me that error. Well, any help would be very much so appreciated.

Thanks.