Those default popups are held in the INI files that come with mIRC. You will need to use the default popups.ini and put into your mIRC directory and restart mIRC. You can obtain it from
this page.
If you know how to just insert the relevant lines into you current popups file though, the default INI lines are:
[lpopup]
n2=Info:/uwho $1
n0=Whois:/whois $$1
n1=Query:/query $$1
n3=-
n4=Control
n5=.Ignore:/ignore $$1 1
n6=.Unignore:/ignore -r $$1 1
n6=.Op:/mode # +ooo $$1 $2 $3
n7=.Deop:/mode # -ooo $$1 $2 $3
n6=.Voice:/mode # +vvv $$1 $2 $3
n7=.Devoice:/mode # -vvv $$1 $2 $3
n8=.Kick:/kick # $$1
n9=.Kick (why):/kick # $$1 $$?="Reason:"
n10=.Ban:/ban $$1 2
n11=.Ban, Kick:/ban $$1 2 | /timer 1 3 /kick # $$1
n11=.Ban, Kick (why):/ban $$1 2 | /timer 1 3 /kick # $$1 $$?="Reason:"
n12=CTCP
n13=.Ping:/ctcp $$1 ping
n16=.Time:/ctcp $$1 time
n15=.Version:/ctcp $$1 version
n17=DCC
n18=.Send:/dcc send $$1
n19=.Chat:/dcc chat $$1
n20=-
n21=Slap!:/me slaps $$1 around a bit with a large trout
Regards,