Driver Power State Failure...[Solved]

Hi All,
This morning when putting my ThinkPad into Standby, I got a blue screen stating ' Driver Power State Failure' *** STOP: 0x0000009F (0x00000500, 0x00000002, 0x829F8D70, 0x82F272BO). I've done a search but have got quickly out of my depth and have got very confused. I have System Restored to when I knew the os was ok but no joy.
Any ideas anyone please??
Thanks,
papillon
IBM ThinkPad R40 XP Pro SP2 40gb hd 512mb ram Outpost Pro 2.5 Kaspersky av SpywareBlaster SpywareGuard MS Antispyware a squared

Troubleshooting a Stop 0x9F Error in Windows XP
http://support.microsoft.com/default...b;en-us;315249

Hi Steve,
Thanks for the link. I have found the files that are not digitally signed, 71 of them. The extensions listed are: .sys, .txt, .mrk & .bnm. It then says 'After you find unsigned drivers, you can disable them by using any of the following methods:' I'm not sure which extensions are device drivers or are they all??
What should I do next please??
Thanks,
papillon

Discovered that ShadowSurf was causing the problem, hey ho....

Hi Papillion,

can you explain to me please step by step what to do ? I happen to have the same problem since today.

Thanks for the help - much appreciated.