blackcatstorm

So I recently bought an HP computer that has window 10. I also bought with it the Wacom bamboo ink pen. I downloaded pdaint tool sai on it but my pen pressure isn't working at all. my brushes also are refusing to change no matter how much I fiddle with the settings. My stabilizer isn't working either. I've tried troubleshooting it on my own but to no avail. If anybody knows how to fix this I would be very happy to hear it.