My cursor and laptop screen are freezing today. Do you know what is causing this?

Hi, I have a relatively new laptop computer and it’s worked like a charm. Yesterday, I noticed two things: the letters were being transposed. For example, I would type and a few of the letters will come out, but then it would skip and go backwards and continue the word elsewhere on a different line. I ran the virus scan and it seems to have taken care of that (fingers crossed).

Today, however, the cursor and screen have frozen about five times. Basically, I will be looking on the internet for something and the cursor stops and won’t move and then nothing else works either. I have to actually shut the computer down and start it again in “normal mode”.

Any ideas what might be going on? Thanks in advance.