To clarify. I now run IE 11 since this afternoon. Prior to that it was 9. I updated IE at the suggestion here. Curious that I could DL IE 11. IE has worked for years for me with no issues so I fail to see how all of a sudden it would be unable to allow me to view YouTube videos. Regardless, I sense a switch of browsers would do nothing to correct the issue I'm having. YouTube, all ability to download as well quit working before I updated to 11. I am unable to update Flash. It downloads about 50% then fails. I'm curious if my AV may be causing it but all was well until this morning, at least that's when I first recognized a problem. I'm running AVG as my AV program as well as Malwarebytes. Ran a scan and all seems to be clean. I had run into some issues yesterday with my Video cards in SLI. The Nvidia control panel would only show one card. Both cards had power, fans running etc. Tried reloading the Nvidia drivers to no avail. I then swapped the cards and PCI slots then Nvidia control panel saw the second card. Activated SLI and all seems to be well in that regard now.
Another weird thing. I downloaded Catzilla yesterday. It downloaded and installed fine. Ran it and got a great score but at the time I hadn't realized there was only one card running. After correcting the SLI issues I ran Catzilla again and was only getting around 30FPS out of both card running. Switched Physx from one of the vid cards to the cpu thinking perhaps that may have caused the slowdown, ran it a second time and the results were the same.
My thoughts are that it may either be the AV programs causing it or there's some other software conflict that is causing it. I've checked the bios to see if anything was amiss there but all seems to be set correctly. I'm running W7 Ultimate 64.