Open up a Notepad Document.
This is because its a basic editor.
Go along your keyboard top row second row etc.
See if there is a pattern to the the keys that no longer work.
Are they in one section ?
To fix or swap the keyboard isn't too difficult. You can normally get a replacement from e-bay cheap enough.
What we have not done yet is established if its windows or a virus that's paying tricks with your keyboard.
Try to start your laptop in Safe mode via F8 at start up.
Open the notepad again and do the same test.
If its defiantly the keyboard then it will need replacing or an external one which will be your cheapest option.
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