The only reason I am posting this one is out of sheer annoyance. I recently upgraded my home PC to Windows 7. It’s been really good so far. But, the problem I was having pertained to putting the computer into suspend mode. Everything shuts down; the monitor, hard drives, USB device turns off, but still the fans and power supply keep doing their thing.
What I found is the energy settings reset and the computer more or less forgot the sleep states it can use (For more info on the sleep states, see this document: System Sleeping States. Microsoft has a tool available dumppro.exe that will let you display and set your sleepstates by hand. This can be useful if the computer does not detect all the settings. To download this tool, save the following file: ftp://ftp.microsoft.com/products/Oemtest/v1.1/WOSTest/Tools/Acpi/dumppo.exe
dumppro.exe admin This command will display your sleep and power settings.
dumppro.exe admin /ac minsleep=s3 This command sets your minimum sleep level to s3.
By setting your computers ac profile minimum sleep setting to s3, when putting your computer to sleep the power settings of an s3 state (explained in the microsoft link above) will apply. Once I ran that command, the standby setting worked great. No fans, no power supply, significant power savings, and a fast wake-to-use time
