unwanted ad on my main pc screen

[bobtheduck]

how do i get rid of an ad that has downloaded itself onto my pc screen behind the icons on my menu screen, it dosent do any harm as such but is very unsightly it wont let me right click to delete it i cant find it in programs and ive tried norton spybot and ad-adware all with no success any help would be great and please explain it simply as im not a whizz with pcs thanks.

[Sligachan14]

Maybe if you start in safe mode (keep tapping the F8 key as the computer starts) then run the spyware and anti virus programme. You should also be able to right-click on the icon and remove it from safe mode.

[Impret-Sir]

Does it appear in the list of wallpapers in the properties section for your display? If so, you should be able to delete it from there. I think it will also be in "my pictures", and you should be able to delete it there too.

[jasoncrocker]

try using norton antivirus 2005 i had the same problem and i got the antivirus and it detected it and u can remove it from ur pc and block it from ever happenong again... try it, it works : ) 

[Kendo]

Are you using windows xp.Is the advert for casinos or so called adult sites.?I use xp and had a problem like this.The advert was for the type of sites I have mentioned.I had clicked on a site which was a blind link,ie a false one.The advert stayed in my desktop and I could`nt remove it.My computer worked normally otherwise.The way I got rid of it was just to close the account down and open up another one with a different user name.Since then I have the new version of xp installed and I also installed AVG which has prevented any further mishaps.