Help !
After yesterday, the system has become very, very slow. I removed my existing anti-virus software (Trendsetter) as I found that it is not helping at all and initially tried to install AVG anti virus which was available as a give way in the MalwareTips site sometime back. The installation failed. Then I tried to install the avira trial version which also failed. Is some malware preventing anti virus software being installed in my system ? How do I proceed ? Please guide.