Hi - below is the post that I originally had on the malware forum but after much help from one of your moderators, nasdaq, he suggested that I try this forum.
Hi - I guess I should clarify the Topic Title. I have updates waiting for me and when I install them, they invariably fail - the important security ones anyway. When I successfully install the optional updates (and they work), I suddenly lose the ability to play any video files through any medium whether it be MPC, WMP, VLC, Adobe Flash when trying to watch something on You Tube. When I try and open a video file on the hard drive, the video player (all of them) crash immediately. I did a System Restore and rolled back to before the updates were installed and all was well. Thinking that everything is back to normal, I again tried the important updates and a couple of optional updates. The optional ones worked but the important security ones did not. But the trouble with the videos cropped up again. I also can't get into the 'System' from the Control Panel to try and diagnose further.
I am running Windows 7 Home Premium 64 bit on a HP desktop with an AMD Phenom II X6 1045T Processor and an AMD Radeon HD 6450 video card.
I have cleaned my computer with Super AnitSpyware Pro, Hitman Pro and and all the anti-malware programs that nasdaq suggested in my previous post (which can be found here: http://www.bleepingcomputer.com/forums/t/548489/cant-play-videos-cant-do-microsoft-updates/).
Appreciate any help or suggestions.