Good morning everyone. I have a desktop computer, specifically a HP Pavilion p6-2302el with Windows 8.1. The problem is that every time that I try to upgrade to Windows 8.1 Update, when I restart, the monitor screen remains completely black; and every time I have to use a restore point to bring the computer as it was before the upgrade. I've already done all other updates, optional or not, and I left this Update for last. How can I fix it?