re: Solution to fans still running in standby mode
Tuesday, January 30, 2007 at 5:54 pm
Windows XP Annoyances Discussion Forum
Posted by frodoc
(1 messages posted)
I have met the same situation, then found a solution:
using the following registry entry,
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usb
"USBBIOSx"=DWORD:00000000
refer to:
http://support.microsoft.com/kb/841858/en?spid=1173&sid=884
On Saturday, April 1, 2006 at 2:14 am, Nr.one wrote:
>I have had some problems regarding "Standby Fans on" and "HID Keyboard device is
>preventing the machine from entering standby".
>
>1) First I had the "HID keyboard" problem but this was solve by reinstalling WinXP
>(ONLY WinXP, NOT a single program).
>
>2) Then the "Fans on" problem began and I began searching the net for a solution.
>Have tried the "Power Sheme Option" without a result. As you state in the last post,
>S3 state CANNOT be used if you have enable an USB device and configured it with
"Allow
>this device to bring the computer out of standby".
>
>3) My problem is just that I NEED to have S3 and an USB-device working together
because
>of the following two reasons:
>
> a) My setup is a HTPC which has not a powerbutton in front, only my keyboard and
>mouse may resume from it.
>
> b) My HTPC uses a Pentium M processor together with a CT479 Adapter. Its a 100x16
>= 1600Mhz processor but IF I set the HTPC in standby without checking the "Allow
>this device to bring..." on the USB keyboard then the HTPC will only resume from
>standby (by pressen the powerbutton) with a much lower multiplier (100x6 =600Mhz).
>The strange thing is just that this problem doesn't happen when I check the "Allow
>this device".
>
>Have found out that when I install WinXP, as state earlier the ONLY problem is the
>fans. Bios is set to:
>
>Suspend mode: [Auto]
>Repost video on S3 resume: [No]
>ACPI 2.0 Support: [No]
>ACPI APIC Support: [Yes]
>
>If I then change my bios to this:
>
>Suspend mode: [S3]
>Repost video on S3 resume: [No]
>ACPI 2.0 Support: [Yes]
>ACPI APIC Support: [Yes]
>
>Then the problem with "HID Keyboard device is preventing the machine from entering
>standby" begins and it will NOT be fixable by just change it back. You simple need
>to reinstall WinXP from the begining.
>
>
>As you can read from above it is a very crytic situation and I have now spend about
>40-50 hours over the last 1?month searching for a solution without any result. This
>thread was far the most best thread I have found so I decided to post here and see
>what comes.
>
>Looking forward to receive some responds...
>
>
>
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