Standby Mode Question

Hi,

 

I recently replaced my hard drive and after reloading XP and all my programs when I put the system in Standby mode the power supply and the cpu cooling fan don't power down  like they used to. The keyboard also stays lit (the Num Lock).  The power button on the front does blink and I can hear the hard drives stop spinning. Do I need to setup something in the power management in XP or do I need to change something in the BIOS? My system specs are:

 

OS Name Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 2 Build 2600
OS Manufacturer Microsoft Corporation
System Name VECTORSIGMA
System Manufacturer Dell Computer Corporation
System Model DIM4400
System Type X86-based PC
Processor x86 Family 15 Model 2 Stepping 9 GenuineIntel ~2791 Mhz
BIOS Version/Date Intel Corp. A06, 6/12/2002
SMBIOS Version 2.3
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume2
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"
User Name VECTORSIGMA\Optimus Prime
Time Zone Central Standard Time
Total Physical Memory 1,024.00 MB
Available Physical Memory 591.37 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 2.40 GB
Page File C:\pagefile.sys

-Jeremy