So a while back my main HD crashed and I had to do a reinstall from backups onto a new HD. I have a Brother DCP-L2540DW, and for the life of me I couldn't find the original installation disk, so that might be part of my problem (not sure). I was able to find an installer from the Brother website for my model of printer, and initially everything worked just fine. But the next time I had to use it, my computer was treating it like it was offline. I looked up the issue and found a solution on Google, and it went back to working just fine. But I had to use it again today, and my computer again treats the printer as being offline. The fix from before is still in place, so I've got nothing. :/ I have a laptop, and the printer still works just fine with it, so it has to be a problem with my main rig.