I get no error messages
Could it be something to do with your Midi Clock settings on the MPK? Go to GLOBAL ----------> MIDI CLK and set it to EXTERNAL. Just a guess, not sure whether it'll help or not.
Nah haven't tried yet, I'm new to all this so I just basically use it to play my drums and samples, nothing special yet.
Did u reinstall your drivers for your keyboard?
Anytime u reformat your computer your going to need to reinstall every devices driver all over again.
Naw dude, nothing personal - thats just the first thing i woulda done if i was in that situation.
Thats really odd that your computer wont even recognize the MPK now??.....Arkitekt seems to be pretty up his shit when it comes to PCs maybe he can give u a helping hand???
lol, I'm an expert with PC's, but i'm no expert with Reason and/or MIDI, my bad.
Do you use a MIDI interface, or MIDI through USB?
Do you get a sound when you plug in the MPK through USB and a little balloon window that pops up by time/date saying "new hardware detected" or whatever