hello val your windows operating system has an inbuilt defragmentation facility, such as exective disk keeper. you do not need to download any defrag software, as it is already available to you. look through all programmes. 1 go to all programmes 2 select accessories 3 select system tools 4 select defragmentation. don't throw out your hard ware , it is a software problem. all the best frank _____ From: jaws-uk-bounce@xxxxxxxxxxxxx [mailto:jaws-uk-bounce@xxxxxxxxxxxxx] On Behalf Of Val Brown Sent: 31 March 2010 18:40 To: jaws-uk@xxxxxxxxxxxxx Subject: [jaws-uk] HELP PLEASE Importance: High Hi Robin, David and Kevin, thanks for your suggestions, Robin and David. Tried unchecking as Robin suggested and also David's suggestion of the clean manager. No joy with Robin's suggestion but I cleared out an awful lot of temporary files, etc. etc. but, like the genie in the bottle, the "invisible" list(s) popped up again so I reckon its going to have to be the defrag but I don't know how to do it - any step by step instructions please. I always log out and switch off rather than leaving the computer in either stand by or hibernation modes. I even did a re-boot following the unchecking of the tabs and the cleaning but to no avail. I suppose the defrag is the last resort before I throw this machine in the skip! With best wishes Val.