I've been trying to find answers over the Internet, and here are some facts about my problem:
1. In one forum, they said it was the antivirus that prevented the installation. I have disabled it but still didn't work. Then another guy said he could installed it but he had to UNINSTALL the antivirus (NORTON).
2. About four or five days ago, my antivirus gave me a notice that a file name SKVP.SYS in C:\WINDOWS\System32\ was a harmful and infectous file. It suggested me to quarantine or even remove the file. So I removed it. BUT on the net, some said that SKVP.SYS was not a harmful file, so we should just let it stays in that folder. However, Norton said that it has a critical threat and keeping could allow hacktool.rootkit to control our system.
So now I'm stuck with this icon form Windows that keeps asking me to install. No matter how many times I try, it won't let me install it. Does anyone have a solution for this? Thanks in advanced.