Right Click on Administrative templates. Then click Add Remove Templates then ADD Button.
This will bring up the Policy Templates dialog. Highlight system.adm and click the Open button.
If prevoius doesn't help try this: (reboot your computer after that)
Start > Run > regsvr32 gptext.dll
Start > Run > regsvr32 fde.dll
Start > Run > regsvr32 ieaksie.dll
Start > Run > regsvr32 ipsecsnp.dll
Start > Run > regsvr32 certmgr.dll
Start > Run > regsvr32 wsecedit.dll
Start > Run > regsvr32 appmgr.dll