What will happens when two Antivirus run your system at once???

Using multiple Antivirus at a time is not a good idea!!!!!

Point 1. The two antivirus take much Ram to run antivirus programs so some times your PC slow down  and some time both will doesn't work.


Point 2. Using more than one Antivirus programs either block or either try to eliminate each other.


Point 3. If using two antivirus at a time, the two antivirus program system searching for that you are monitoring and sending information about your system that causes to look like a virus, So they try to kill each other.  


So search on Google and take opinions from your friends then chose best Antivirus for you PC or Laptop....