Do you know if your system is going into Sleep S1 or full on S3 state? S1 leaves some things running, S3 is a much deeper sleep (and S4 is hibernate). Check your BIOS settings and make sure that turning on via mouse/key click is disabled. ACPI should be on in bios, and your "computer" device in device manager should have the word ACPI in it, not "standard PC".
To get the powermanagement checkbox to appear in device manager for USB devices (that support it), you have to do some registry editing. I'm not responsible if your computer messes up, but it worked for me. Make a system restore point if you are worried.
Start, Run, type in regedit and press enter.
Go to HKLM\SYSTEM\CurrentControlSet\Services
Look for a key named USB or usb. If it's not there, create it.
Add a DWORD with the name USBBIOSx inside that key, and give it a value of 0 (it should show up as 0x00000000)
Reboot, and you should have the checkboxes in device manager, for your USB devices that you are looking for. It might be under the mouse too, depending on your touchscreen driver.
If the powermanagement tab doesn't show up, uninstall your USB devices (from device manager) and unplug them, then reboot. Once XP is back up, plug them in, and it should appear.
To change your sleep state when a standby event is called upon, you can use a microsoft tool called dumppo.exe
ftp://ftp.microsoft.com/products/Oem...cpi/dumppo.exe
save to your windows directory.
Open a DOS window (Start, Run, CMD, enter),
type:
dumppo admin
And it will show you what state it's set to go to. If it's S3, and you want S1 to resolve an issue or hang like I did, you can then type:
dumppo admin minsleep=S1
And it will force S1 from that point on.
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