Grif notes using another PC at http://forums.cnet.com/7726-6122_102-5509131.html?tag=posts;msg5509131
Microsoft's Defender is ranked, reviewed poorly. Here's an example:
Pros: Easy setup; low performance impact
Cons: Very poor malware detection; no extra security features
Verdict : If you're relying solely on Windows Defender for your antivirus protection, you're anything but defended.
I suspect a virus or malware because I can do lots of things but cannot turn firewall on and can not access cnet or trend micro or Microsoft to down load a virus program. Please help.. Have tried in Safemode did nnot work. Thanks. On tablet