Yesterday I inadvertantly opened a site that set off my security warnings which unfortunately were not able to stop my computer being infected by malware.
Spybot wouldn't open, m/s security centre keeps being closed and I cannot contact the microsoft security site. Also Windows Defender won't start.

I get my ie browser opening with luxe-softeware.net and an audio file starts playing.
I keep getting the popup message "Google Installer has encountered a problem and needs to close."
I have since uninstalled ie and installed Firefox but I ie still gets started and reclassified as my default browser.
I did get Spybot running by renaming and it does find stuff which is then deleted but is there again at the next scan.
Please help