PC_Petra9999

petra9999 said:

I just posted a question on the Eset forum just waiting for an answer thanks for telling me to go there>

If you clicked on that link the answer is from ESET forums and it is correct. The files that ESET is trying to open are already in use by Windows and/or other applications and that's why ESET can't open them up to perform an AV scan on them.

Here's the quote from the link that I supplied:

Boot sector of disk C: - error opening
Boot sector of disk D: - error opening
C:\hiberfil.sys - error opening
C:\pagefile.sys - error opening
C:\swapfile.sys - error opening

The above errors are ok. In order to scan boot sectors, you must run a scan as an administrator. As for the sys files, they are system files exclusively opened by Windows which means that any other application cannot access them. Simply ignore these errors.