Vista Update: SpeedStep Now Working
Friday
May 30, 2008
I made a few calls to HP Support, and I was able to solve the heating and battery life issue on my new Presario B1256TU. It turns out that a resetting of the BIOS to defaults would solve things. Now SpeedStep works even at first power-up (without needing to wake up from sleep first).
Next up: making some modifications to the BIOS, to see if things work well even with BIOS changes. I also need to see if disabling the onboard LAN from the BIOS would help extend battery life.
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renmin
May 30th, 2008 at 2:49 pm
Interesting. I run XP on my B1256TU. Fortunately it doesn’t have any issues with SpeedStep. I addressed the heat issue through undervolting with RMClock. (I used RMClock on my old laptop as well, a Compaq V2310 with an AMD Turion processor.)
How much battery life are you getting now? I get around 2.5 to under 3 hours with Wifi on and 50% screen brightness. I’ve also thought about disabling the LAN and ExpressCard slot in the BIOS to see if it will extend the battery life a bit more.
jhay
May 30th, 2008 at 4:37 pm
Hmm,. maybe I should start looking into this trick as well. I’m looking for ways to extend the battery life of my c765TU notebook.
I suppose the procedure is the same? Tweaking things in the BIOS?
J. Angelo Racoma
May 30th, 2008 at 4:51 pm
Renmin, it’s great that you get 2.5+ hours on your B1256TU. My battery meter usually reports 2+ hours, but I guess the most I’ve had so far is 2.5 hours so far. What voltage levels do you use? The T2370 is rated from 1.075 to 1.175 volts, I believe.
Jhay, I don’t think it’s possible to squeeze out more battery juice for the C765TU, because of its Celeron-M processor. It will always run at 100% clock speed. You could try throttling the speed down, but I’m not sure if that will do much difference in terms of battery life.
ian
August 24th, 2009 at 3:50 pm
hi guys. i’m no tech guru. but i was wondering how you were able to modify your bios? i run my B1256tu on XP and i only get 45mins battery life. can you help me guys. battery life is my best priority right now. thanks. hope you guys can help me on this.
Karl
September 25th, 2009 at 2:51 pm
Same here… I actually posted my comment on your previous post. Hope you can help us.. I’m running on vista and yup, i’m getting like 45 mins of battery life only. Then when I used a USB wifi.. got worse, i’m clocking 25 mins battery time only….
Not a techie, too…