I replaced the keyboard and it started. Most of my programs are missing in "Programs and features yet they all function except security essentials. I try turning it on and i get error #80070003 the missing pathway error. i can' t uninstall because its not in programs and features. How do I fix the situation and get my house to turn green again? Thanks for any info, Michael. P.S. I cant enter the product so this is listed under another product.