hi... i had the same problem, using windows 7 and windows xp after installing the wilcom software weather it was the v8 or 9 or even the 2006 version or even after installing the sp4 , anyone of these leads to the same problem: Losing the hibernate and standby option!!!
i tried the cmd command: powercfg -h on , but it wrote that hibernate couldn't be turned on coz of some kinda legacy driver called : trysftnt.sys , after trying to find a use for that driver , i found out it's some kinda vedio driver and right after installation a checked for it's creation date and it was right on that date, so i just deleted it and restarted th pc and the hibernate and standby were back
i tried the wilcom software and it WORKED just fine
so the solution was to remove this legacy driver: trysftnt.sys, i'd recommend that u try the cmd command to make sure that the same driver is causing ur problem!!
wish that would help u !!