Slow system Response with Windows 2008 R2


    Slow system response with Windows Server 2008 R2 and Windows 7

    This fix applies to the following Intel server boards:

    S3420GP, S5500BC, S5500HCV, S5500WB, S5520HC, S5520UR, S5520SC, and SC5650SCWS.

    Description of issue:

    Server responds slowly after Windows Server 2008 R2 or Windows 7 is installed.  If the operating system installation will not complete, skip to step 3.

    • System login is very slow
    • Keyboard and mouse are slow to respond
    • Task manager shows high CPU usage

    The DPC (Deferred Procedure Calls) rate increases until the system slows and is not usable.


    1. Update the system BIOS to the latest version. 
    2. Change the PCI AER Support setting in BIOS to Disable before installing the operating system.  This setting is found in BIOS > Advanced > PCI Configuration.
    3. Connect the network ports to a network, switch, or connect both end of the network cable to different ports on the same system before the operating system loads the embedded NIC driver.
    4. Once the operating system install completes, download the latest network drivers.
    Was this article helpful?
    0 out of 0 found this helpful