System restore not working

[Ettan]

Hi,
It says my systen restore is turned off.
How to activate it?
I don't yhave admin password i am an user on this system not a guest.

[Olga]

Your operating system? XP or Vista?

[Isaac1]

To enable or disable System Restore (For XP), perform the following steps:

Start the System Control Panel applet. Select the System Restore tab. Clear the "Turn off System Restore on all drives" check box to enable System Restore, or select this check box to disable System Restore. Click OK. Also here:
To delete older restore points, but leave the system restore turned on: Right Click the Drive in question/Properties/Disk Cleanup/More Options/System Restore/Cleanup.
You can also click the Settings button to set a maximum amount of space that you want each drive to use for restore information. If the drive you select isn't the system drive, you can also disable System Restore on a per-drive basis. The maximum amount of space that you can use for restore information is 12 percent per drive.

OR

Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore.
If a "DisableSR" value doesn't exist, go to the Edit menu, select New, DWORD value, and create the value.
Set the value to 1 to disable System Restore or 0 to enable System Restore.