Hi Shazabelle,
Thank you for the information. I would like to confirm a couple of steps with you.
1. The document that you have trouble printing on Windows 8.1, you can print with out an issue on Windows 7?
2. Is the two computers, and the printer all connected wireless?
3. Is it the same program, such as Microsoft Word that you are printing from on both computers?
4. Have all updates been completed on your Windows8.1? (ie. Microsoft Word, and Windows). This will make sure that the software is compatible with the new operating system.
5. Are you able to print a multi page document from Notepad on the Windows 8.1 computer?
Looking forward to your answers. :)