|Winpack.exe is Trojan-Downloader.Win32.Agent.gg.
When you start Internet Explorer you see blank window with a URL of "http:///" (http, colon, three slashes).
If you click on a link, the new page opens for about half a second, then turns blank. Internet Explorer becomes next to unusable.
Remove it from Startup and check antivirus (also check How To Remove section)Anti Spyware to complete fixup.
Winpack.exe tries to download other Trojan programs and install it on your computer.