Thank you very much for your response. It's really very much appreciated.
I've swapped my security software as per your instruction but when i tried to update my wifi driver
automatically, windows said it was up to date. So I went to Intels website, where there are indeed newer versions of the driver, but their downloader software wouldn't work and the manual version of the driver that i downloaded doesn't come with any kind of exe installer. As a non-tech person I could really use a bit of help as i'm a litlle scared of losing internet, and therefore access to the forum cavalry, if i just charge in and start changing things myself.