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Hello everyone. Thanks for the help so far - gave up and went to bed last night as it was late.
For those who say I was foolish to uninstal Malwarebytes, I did it for a good reason. It wasn't the paid version, I used it to uninstall the virus, but then I couldn't access one or two websites (specifically the Telegraph crossword site, and there was at least one more but I forget which). When I had this problem, I racked my brains as to why and the only change I had made to my computer was installing this software. So I removed it and problem solved. I don't know what was wrong, but I found no other reason why I was having difficulty with the websites in question. But I now have the virus again.
Last night I tried to install Malwarebytes again and going to the website got me to install Spyhunter 4. However I couldn't install it last night. This morning I have managed to get it installed and it has identified the threats on my computer but won't get rid of them unless I pay. Since I am in Germany, where they don't like credit cards, and I can't get US sites to accept my bank details, does anyone have a clue how I can find free software to get rid of the virus? Obviously this will be a short term fix and my current Virus checker hasn't identified this particular threat, so I have to do something longer term. I will get help, but am unable to do anything before next week as this is the weekend, of course. I am not a technical person, and trying to uninstall things manually seems a bit too risky to me as I don't want to mess up my computer completely by doing something wrong.