Reactivate the inoperative help and support center(for Windows XP)

            The help and support center which could be called up via the ‘Help and support’ option in the Start menu had always proved to be very convenient. And then it suddenly stopped functioning without any apparent reason.
             The function can mostly be resurrected via the command line. Start it with ‘Start | Run’, and followed by the ‘cmd’ call. Type the following command and confirm it with [Enter].
net stop helpsvc
cd /d %windir%\pchealth\helpctr
rd packagestore /s /q
cd binaries
start /w helpsvc /svchost
netsvcs /regserver /install

Open the ‘Task manager’ with the [Ctrl]+[Alt]+[Del] key combination and then select the ‘Processes’ tab, then
right click on each of the following entries and click on the ‘End process’
key:
helpsvc.exe
helphost.exe
helpctr.exe
Then switch to prompt again and enter Net start helpsvc and press [Enter]. This should make the help and the support center function.
source: chip plus