unwanted power management (turn off screen & password request)

[MasterMarc]

TV-Server Version: TV Engine 0.3
MediaPortal Version: 0.2.3 RC3 + SVN 23. Oct.
MediaPortal Skin: xFace / Revision
Windows Version: XP SP2
CPU Type: AMD Athlon 64 X2 5200+
HDD: 500GB
Memory: 2GB DDR2 800MHz
Motherboard: GIGABYTE MA69GM-S2H
Motherboard Chipset: AMD 690g
Motherboard Bios:
Video Card: AMD 690g (ATI x1250)
Video Card Driver: Catalyst 7.10
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Hauppauge WinTV Nova-S Plus
1. TV Card Type: DVB-S
1. TV Card Driver: 4.0
2. TV Card: Hauppauge WinTV Nova-S2 HD
2. TV Card Type: DVB-S/S2
2. TV Card Driver: 4.0
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Cyberlink PowerDVD 7
MPEG2 Audio Codec:
Satelite/CableTV Provider: Astra 19.2°E
HTPC Case: YoengYang YY-A211
Cooling: Arctic Cooling
Power Supply:
Remote: Hauppauge
TV: MEDION 32532 32" LCD
TV - HTPC Connection: HDMI

Hi,
I got a problem with the power management of xp. i set turn off tv/screen to never (with administrator permissions) , but after using mp it's set back to 20 minutes and password is required again (althoug i turned that off, too) when windows reenters after standby. has anybody same oder similar experiences? and even more important, has anyone a solution?
mfg marc

[MasterMarc]

so problem solved after 3 hours research on google.
for anyone who might have this problem in future (in combination with a ati vga):
execute "services.msc", stop and deactivate "ATI Hotkey poller".
go to power management and set settings as you like, now everthing should stay as it is.
greetz marc

[rav994]

Tx i hav the same porblem and same mobo and drivers as you.
I will give this a shot