Since last week, I have lost my dictionary and spell checker, on Tool Bar.?

I had 3 viruses last week, that I deleted. After I was unable to get on internet. I phoned BT. eventually I was conected again. Then I had lost tool bar, I did manage to restore it, but my spell checker has dissapeared, I have tried everything. Please can you help?Since last week, I have lost my dictionary and spell checker, on Tool Bar.?
Which toolbar are you talking about? Yagoo, Bing, for example.

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