Ideapad s400 touch bios or other hidden power management while on battery? or battery just weak?

Hi,
I have problems with performance when unplugging my ideapad s400 touch, and it does not seem to be related to windows or intel graphics power settings.
Example, while plugged in with full battery (not charging), I can play Skyrim at 600x800 with 28-30 fps (all shadows turned off and with reduced textures, in case you are wondering how that is possible)
But when I unplug, or the computer is charging, the game will be only barely playable at 480x640 with 18-26 fps (besides res. of course same settings).
In both cases, the intel graphics options and in the Lenovo Energy Management is set to the high/max performance settings.
So I am wondering if there are some hidden Bios power management or some other hidden power management going on, when it is unplugged or charging?
Or if simply the battery can not deliver the same juice as when it is plugged in?
Thanks for any help,
L

hi x8lars,
Welcome to Lenovo Community Forums!
Can you try changing the power plan on your system to a High Performance Settings,
Also check the Advanced power settings and make sure that the Maximum Processor start and minimum are set the same with the Plugged in.
Let me know your settings,
Cheers!
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Hello ive recently made a factory reset on windows 8.1, everything worked ok and I decided to update and shutdown. Today i turned on the machine everything seemed ok and proceed to shutdown again, and when I come back 2 hours later I cannot power on the machine there is no indication that theres power in the system nothing boots up no sounds, no leds nothing. I tried changing ac outlets, removing the battery, doing a discharge pressing the power button, and tried using the Onekey Recovery button on the side of the power button. I have no idea what went wrong, im around machines all the time and where this laptop is I have other computers aside. Im not sure if i need to remove the bios battery or what step should i take.
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hi x8lars,
Welcome to Lenovo Community Forums!
Can you try changing the power plan on your system to a High Performance Settings,
Also check the Advanced power settings and make sure that the Maximum Processor start and minimum are set the same with the Plugged in.
Let me know your settings,
Cheers!
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IdeaPad S400 Touch Windows 8 reinstall

Hello to all. This is my first post on this forum. I bought a IdeaPad S400 Touch several months ago (October) and one of the first things I did was create a backup image on an external hard drive using the tool in Windows 8. I then wiped the hard drive completely in order to install Ubuntu. I was going to put Windows 8 back ont he machine and have the two running side by side. However, I have not been able to reinstall Windows 8. I physically took the hard drive out of the laptop and completely erased it using Disk Utility on my Mac, making sure that the disk was reformatted as MS-DOS. I also created a separate partition, named Lenovo, of 20GB that contains the backup files from my original backup. Still, using OneKey recovery doesn't work, and I am unable to reisntall Windows 8. Please , would someone tell me what I am doing wrong and if there is any way to fix this mess I have created? I will say things were so much easier back in the good old days when PCs shipped with recovery media. Thanks.

Hi Robert,
Welcome to Lenovo Community!
I’m sorry to hear that the OKR (One Key Recovery) is not working as expected in your S400 touch Laptop, let me inform you that once the partition structure HDD (Hard Disk Drive) gets modified the hard disk recovery corrupts, if you have created the recovery media then you can use them and restore the Operating System. Please try running OneKey Recovery from hard disk, power off the laptop then press Novo button instead of pressing power button and check if it works and if OKR does not work. I suggest you to contact our Technical Support Team to get the details of the nearest Authorized Service Center to get the issue analyzed.
Click here to open a link where you can select the country and get the exact contact support number. I’m sure they will be a great help.
Do post us back for further queries.
Best Regards
Shiva Kumar
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Hi,
I need to connect Ideapad S400 Touch to projector which has only VGA input. Therefore, I've bought such converter:
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hi ro174748,
Welcome to Lenovo Community Forums!
The connection you need is a active coverter.
Passive connection just passes the signal and relay the signal without converting it.
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Here is a simple discussion about this issue.
Hope this helps
Cheers!
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Ideapad s400 touch entrada tactil

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Buen día,
Bienvenido al Foro.
Para este caso te recomiendo
realices un drenado de energía lo debes realizar de la siguiente manera
1.retires la batería y desconectas el cargador y presionas el botón de encendió por 50 segundos esta acción la realizas en tres ocasiones luego de liberar la energía estática procedes a encender si no funciona realizas una restauracion de fabrica
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Es importante recalcar también que los foros suplementan los recursos de los usuarios de Lenovo pero no reemplazan el servicio técnico oficial. Para un listado de números de servicio sigue el enlace: Numeros de Soporte

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Ideapad S400 touch no le funciona el touchscreen

HOLA!
Mi S400 touch dejo de funcionar el touch, en la pantalla en la parte de arriba se alcanza a reflejar una pequeña cuadrciula.Esto paso al actualizarse al windows 8.1 . Quiero saber si usando OneKey recovery podria volver a funcionar?

Hola diana_roque que tal,
Si el problema es relacionado a software aplicando el onekey recovery el problema sera solventado.
Te recomendaría antes ingresas a la web de soporte Lenovo e instalar los controladores de vídeo para tu ordenador https://support.lenovo.com/es/es seria bueno que intentaras en primer lugar con el ofrecido para Windows 8.1 , si persiste intentar con el ofrecido para Windows 8.
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Mis Lenovo: Y560p,Z580,Z500 touch,S920,T400,G50-70 ,Soy voluntario no trabajo para Lenovo, las opiniones expresadas por mi no representan a Lenovo, no se responde a preguntas de manera privada debes crear un nuevo tema, números del centro de llamada Lenovo Aquí , reglas de participación del foro Aquí , si encontraste solución a tu problema marcarlo aceptándolo como solucionado!!!!!

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hi caity13,
Welcome to Lenovo Community Forums!
Try Draining the system of charge as a possible static charge causing this
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http://support.lenovo.com/en_US/feedback/detail.page?LegacyDocID=MIGR-76613
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Hi,
I have had my Lenovo U430 touch for about a month now, and have noticed a problem with it. Sometimes when I leave my Lenovo u430 touch alone (with full battery), and sometimes it will just power off without me doing anything. It even happens occasionally when I dont use it for a few minutes while im working in front of it.
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Hi Olaf9500,
Welcome to Lenovo Community!
As per the query we understood that you are facing an issue with system turn off when the system is in idle in your U430 laptop.
As you have mentioned for the drivers please check the below link for the drivers.
Click here for the energy management drivers if the operating system is windows 8(both 64bit and 32 bit).
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If you are using windows 7 then go to start search type power option, under on battery there is option for turn off the display, select never option and check for the issue.
Also there is option for the sleep under the power option select never option and check for the issue.
Hope this helps! Do post us back for further queries.
Best regards,
Ashwin.S
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Solved!
Go to Solution.

Allow me to break in here.
See this thread:
http://forum.lenovo.com/t5/IdeaPad-Y-U-V-and-Z-series/LTT-Power-Manager-or-Lenovo-Energy-Management-...
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Ideapad s400 touch bios or other hidden power management while on battery? or battery just weak?

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