Reset BIOS, now won't hibernate!

**Tim Lake** · 06-15-2007, 11:48 AM

Hey.
I recently had to reset my BIOS blind after I messed up a display setting, I got it all back but now it doesn't seem to hibernate! I haven't changed ANYTHING in windows (xp) and have double checked all the power settings are as they should be but for some reason it isn't hibernating from the carnetix P1290 signal. It does if I manually make it hibernate from windows (and that seems to be taking a long time) but not automatically like it used to.

The ONLY thing I changed were the BIOS settings (back to failsafe defaults) but have now altered them back to what they were before (I think!)

What have I missed or is the hibernate taking so long so the p1290 is killing power before it has a chance to complete. I can't tell at the moment as the monitor is an automatic dash one and closes when I kill the ignition.

It's a VIA M10k mobo by the way

**GiODi** · 06-15-2007, 11:59 AM

The only thing i can think of is to make sure ACPI is enabled...

**Tim Lake** · 06-15-2007, 12:12 PM

Originally Posted by GiODi

The only thing i can think of is to make sure ACPI is enabled...

I have this in the power management screen with options for S1, S3 but nothing seems to make any difference

**v8 scimitar** · 06-15-2007, 01:08 PM

try loading the optimised or performance settings instead of fail-safe. Fail-safe turns most of the features off.

**DarquePervert** · 06-15-2007, 01:17 PM

If you're changing those options int he BIOS, Windows likely wont' pick it up.
It has been my experience that Windows will have to be reloaded to pickup the ACPI mode set int eh BIOS.
There may be another method, but I'm not aware of it.

**GiODi** · 06-15-2007, 02:07 PM

I believe what DarquePervert is saying is correct. I've read on HTPC forums that there are a bunch of registry hacks and such that must be done to enable S3 (standby) after the fact.

Is there a setting in the BIOS for what to do when you hit the power button? You can try that

**Tim Lake** · 06-15-2007, 04:54 PM

Bugger, do you happen to know what the reg hacks were (or where I can find out) cos I REALLY don't fancy reinstalling windows

**GiODi** · 06-15-2007, 05:05 PM

The reg hacks are for Standby, not Hibernate. The site that I saw them on (HTPCNews.com) is no longer around.

Were you able to locate anything in the BIOS about the the function of the power button? Did you load the optimized defaults as v8 Scimitar suggested?

Edit: I believe the reg hack is only to enable your computer to wake up by a USB device:

# Check your BIOS settings: Make sure your BIOS Power Management settings are set to S3 standby. Unfortunately if it is not set to S3 when windows was installed, Windows will not install the correct settings to allow the computer to sleep in S3 mode. However, just changing the option in the BIOS will override the windows setting on some computers and you may enter the S3 sleep state anyways.
# Are you using a USB keyboard or mouse? This may be holding you back. For fear of allowing a computer to enter a sleep state that it was incapable of resuming from due to incompatible USB devices, Microsoft decided that if USB input devices were present, it would not allow S3 Standby mode. Fortunately this is easily bypassed through use of a registry entry. Just open regedit and enter the following registry entry as described in this Microsoft Knowledgebase Article:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\usb
“USBBIOSx”=DWORD:00000000

Side note: you can use this to allow you touchscreen to wake your computer up, but it doesn't work for me; it just pops right back out of standby.

**NiSlo** · 06-15-2007, 07:36 PM

Man, I was looking at a thread yesterday about this exact problem and there is a program from microsoft (undocumented) that you can open form the command prompt and tell it what ACPI seetings to use if you change the settings in your BIOS, but I CANNOT find the bloody thing anywhere.

I'll try to track it down.

Got it here