It does not matter if you are later cleared, acquitted, exonerated or whatever your local legal system calls it.
If you are cleared, there will always be those who think that you are some sort of pervert who "got off".
Also, if you are convicted just because there was porn on your computer, there will be (hopefully) be some people who will recognize the miscarraige of justice..
Once accused -- guilty or not -- your live is forever changed. I will likely cost you your retirement savings to pay to a lawyer to mitigate the damage.
Therefore, do not be your own accuser.
If you find anything incriminating on your computer, delete it irretrievably -- if you don't know how, find out.
Then ever afterwards, stfu.