My dell inspiron 5040 has virus

When I use computer it has pop ups about my virus

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0:

Can you explain in more detail the issue? is it when you try to log into the laptop you are being stopped by a pop up? or can you log in?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0