Dr. Watson is not a virus, it is Microsoft Windows system watchdog that monitors for system stability and failures. But someones thinking that Windows at whole is the virus, so, to get rid of it, just install Linux or get Mac
for disabling
login to windows admin account
click start button and then click run
type "drwtsn32" and press "enter" it will open a dr.watson confugiration windows
uncheck all the boxes in "option" menu in "dr.watson" windows and click "ok"
now for deleting
type cmd in run menu and press enter
type c:\windows\system32 and press enter
type "del drwtsn32.exe" press enter