Hi Mary
Thanks. I can't see anywhere in the settings to clear log files. The problem I was having was the date and time was out and I was getting CMOS battery errors, eventually resulting in having to boot form F2 after the Dell screen. Having replaced the CMOS battery I have successfully reset the system date and time, I just can't get rid of the error message meaning I have to boot from F2 all the time. There are no other performance issues.