If it turns dark, this can usually mean you have just not done anything for a while so it is activating the screensaver. The screensaver is just black until you personalize it. If it's not because of that, just leave it a minute and it might come on. Otherwise, turn the PC off.
contains events generated by specific programs running on the computer
Programs that are running but not in use are running in the "background."
they are problem that affect the smooth running of the computer
It never damages the computer - it distorts or erases the programs that are running on it or are stored on it.
There are a lot of programs running in the backround which need to shut off properly before your computer can shut down. To see these programs, press Ctrl/Alt/Delete to get the Task Manager, click on programs running tab and you will see a list of all the programs running.
Same as restarting. It helps when your computer is running slow from all the programs that you run on it.
A system can be hacked by programs running in either the foreground or the background; it all depends on their stability and security preparedness.
I have two running right now. you can run as many as your computer can handle
Antivirus programs can be used to remove trojans from an infected computer. This can be done simply by running a scan with the program on the infected computer.
Yes, it is.
It monitors all running programs and applications on the computer.
72 hours of continuous opertion