My Brothers laptop running Windows 7 has Windows Bitdefender & Microsoft Security Essentials installed.
Windows Bitfender is turned off and unable to be turned.
My question is should you only have Windows Bitdefender installed on your laptop or just Microsoft Security Essentials installed but not the two programmes which is why Windows Bitfender can't be turned on?
There is one other issue with his laptop where some times when at the desktop his screen goes black for a few seconds then all the desktop icons enlarge as well as the taskbar bulking out the desktop area.
If he shuts down the laptop the desktop is normal for 5 minutes and sometimes 1 hour then back to the black screen for a few seconds and enlarged icons.
Any suggestions please.