Earlier defraggler worked fine but I have downloaded later upgrade and it defrags for about 2% then I get the dreaded BLUE screen.I have uninstalled several times but still same results, when the blue screen comes up it doesnt find the hard drive on restart.I am using XP PRO and I have 180 hdd with 22% used.
Do you have a minidump in c\windows after the bluescreen?
http://www.pchell.com/support/minidumps.shtml
You can either download Whocrashed from here
http://www.resplendence.com/whocrashed
and copy and paste the info, or upload the minidump to somewhere like media fire, or one of the devs could arrange something with you via pm's perhaps.
You need any help just shout.