Browser,regedit,task manager,command prompt , everything disappears

[dhanesh_mm]

Hi All,

when I opened an file, after 2 secs its disappears.The same thing happened for task manager,command prompt,browsers everything. I think its infected by virus. Any help would be appreciated.
Thanks,
Dhanesh

 

[AtaliaA1]

System Restore to earlier date, never open emails from people you don't know and those emails with the jokes people pass along, most are not funny anyway. downloading from nefarious sites is asking for problems also like music sharing. even
Utube had some problems earlier part of last month.