Question

Determine whether there are already viruses lurking on his computer

Answer 1

Below are some warnings from which you can know that already viruses are lurking on a computer:

a. Unexpected pop-up windows

b. Slow start up and slow performance

c. Suspicious hard drive activity

d. Lack of storage space

e. Missing files

f. Crashes and error messages

g. High network activity

h. mail is hijacked

i. Browser woes

j. Security attacks