hi,i have missing space drive in my computer, my drive capacity is 160 GB separate in 2,which is local disk c with windows xp is 80GB and local disk D with save data is 80GB, basicly my space drive in local c is 38GB and suddenly last night my space drive only 2,5GB, i have checked using lenovo system toolbox and this program scanned my drive c,and it is shown that unaccess 38 GB inside is zero file and the remark is unaccess file due to access restriction.please help me and what should i do to fix this problem