Download, install and run the free version of Malwarebytes Anti-Malware:
https://www.malwarebytes.org/antimalware/
(NB: When installing, make sure that you de-select the pre-ticked option to take a free trial of the Premium version. Don't be surprised if a scan takes ages - that's normal. When malware is found, use the 'quarantine' option).
Thank you both for your prompt replies. I already have malwarebytes installed but it has not done the trick this time. I also have AVG but this has not worked either. Another ad is annoying me now called Buzzwok and I can't remove this either. I would appreciate any suggestions you may have.. I have windows 8.1. Thanks.
I could assist if you provide the information requested by methyl.
If you do follow the instructions in malwaretips.com I would suggest that you avoid using AdwCleaner or Hitman Pro which could upset your Operating Systems Registry. Also Re-setting your Browser should be avoided for the moment because you will loose some items which will have to be re-established.
I couldn't get rid of the virus so I reset the computer back to factory settings and it is now working properly. I am now getting the desktop back to normal, and hope that is the last of the virus. Thanks for all your interest.