Essentially, we will always encourage bringing a laptop for mobility, portability, and security reasons.
However, there's no real rule against bringing a PC. You'll have to figure out the logistics and installation, but it shouldn't be a problem after that.
In fact, you can keep it overnight throughout the event. We might even be able to secure you a corner for your setup. I'll have to personally confirm it, but we'll be locking the venue personally. So we'd keep an eye on your stuff. But don't hold us responsible of what happens to it. We're not going to punch it or try to hack it, or both, we just don't want to deal with your computer if something happened that's beyond our control.