Sorry but I am not that good with computers. I am using windows 7.
That could make upgrading to the latest Electrum somewhat problematic.
The newer versions of Electrum don't play particularly nicely with older versions of Windows. If you get an error regarding python35.dll after you attempt to upgrade, then you will need to do as advised on the Electrum download page:
Note: Some old versions of Windows might need to install the KB2999226 Windows update.
NOTE: This update can be downloaded here:
https://www.microsoft.com/en-us/download/details.aspx?id=49077