hard disk Q ?

you should do disk defragment every week it will speed hope you personal computer and if you game helps out to who should also do disk clean up that helps too hope this helps with you question

Once a month is good. Be sure to back up though. I've gotten a couple of reports where people's PCs were messed up after a defrag (lost files, or a lost OS -_-)

once in a month is good enough ...... now a days we have big hard disks which takes long time for de-fragmentation .. so once in a month is good

In Windows simply using computers creates small 'messes' in the hard disk. These fragmentations slow the disk down. * Think of the hard disk as a house and the computer user it's occupant. Like a house, a computer hard disk needs housekeeping. That housekeeping is called diskcheck and defragging.