1. Some symptoms of virus infection
How would we know whether the computer gets infected by viruses? Actually, just like some one is sick, when computer gets infected, there’re always some obvious symptoms, for instance, machine would run very slowly, Internet is inaccessible, antivirus software fails to update, Word documents could not be opened, computer could not start up normally, disk partition couldn’t be found, data lose and so on. These are all some sign of virus infection.
2. infection diagnosis
1) Press Ctrl+Shift+Esc key combination to call up Windows task manager to check system running processes, find out some unfamiliar processes and write down their names (needs experience), in case they are viruses and you can eliminate them later. For the moment, don’t end these processes, because some viruses or invalid processes might not be ended here. Click performance and check current state of CPU and memory, if the occupation rate of CPU is close to 100% or the memory occupation stays high, at this moment, it’s about 95% possibility that the computer gets infected by viruses.
2) Check current Windows started services, control panel—management tools—service, check the row that state is “Enabled” and startup type is “Auto” on the right pane; generally speaking, normal Windows service, basically has description content (except some are fabricated by hackers or worm virus), at this time, double click the service you think iss