Welcome to NLG!
Just to make sure we know what model of machine you have it is probably best to post a photo of it. Posting photos is easy. When you are creating a message post look under the message box and find "Attachments and other options" written in green. Click it, then click on "Choose File". That will open a dialog box for you to select the photo you want to attach. After selecting the photo to attach you click "Post" or "Save" like you normally do to post a message.
If you just bought the machine from a slot machine dealer do they offer any help or guidance for new owners? They would be familiar with the machine they sold you and could possibly give advice on getting it setup. If not, once we know exactly what model you have then the folks here can help you to get it working. You'll need to give clear details of what isn't working and be prepared to post photos when needed, otherwise getting good advice for your particular machine will be harder.
Your video poker machine is probably an IGT PE+ model, but that's just a guess. Photos of it will confirm.