i think i got a bug, help please

[cloud1161]

i think i got a bug or some type of virus or trojan on my computer.  its nothing extremely serious, but i keep getting a ton of pop-ups on my internet explorer.  it seems to be worse when i leave my computer sit for 5 minutes without touching it.  the funny thing is.  i mainly use opera or google chrome so i dont understand whay internet explorer is getting the popups.  also, sometimes the whole computer will slow down to where its barely working.  i ran malware bytes and ccleaner, but that didnt seem to help much.  can someone help me?