Possible keylogger ?

Hello guys I don't know if this is the best place to ask but yesterday my laptop started behaving quite strangely, multiple times (for example when using the search function in windows) when I tried to type, every single input was wrong almost random, this coupled with my background image changing to white every time this would occur.

I ran Sophos and malware bytes and nothing came up, still to be on the safe side I decided to format and start again.

The problem is that it once again happened, and I'm searching online that it might be Sophos anti keylogger doing this?

This is very strange, so if anyone has got an idea, please do share!

Cheers