Strange USB problem with my E540 (20C600JHFR)

Hello !
I've this nice piece of gear since a fortnight.
Yesterday I was doing Windows 7 updates and got a blue screen pertaining to a power problem on a device (I did not note anything about this BSOD thinking it was updates related.)
This night I noticed that, laptop turned off my Evoluent vertical mouse (to prevent rist problems) was turned ON ! And it was not on the port dedicated to this behavior.
This morning, upon power up on battery, I've seen that the laptop is 60 % instead of the 100 % it should have having spent all Sunday on mains.
So I went into the BIOS and turned OFF all things USB pertaining to power., and turned the laptop OFF with the mouse plugged. Still having power !
So what's wrong ? What should I check ?
Many thanks in advance for your help !
P.S. : my laptop is dual boot (Win 7 and Ubuntu 14.04 LTS which I mainly use)

georgesgiralt wrote:
This night I noticed that, laptop turned off my Evoluent vertical mouse (to prevent rist problems) was turned ON ! And it was not on the port dedicated to this behavior.
This morning, upon power up on battery, I've seen that the laptop is 60 % instead of the 100 % it should have having spent all Sunday on mains.
So I went into the BIOS and turned OFF all things USB pertaining to power., and turned the laptop OFF with the mouse plugged. Still having power !
So what's wrong ? What should I check ?
Many thanks in advance for your help !
P.S. : my laptop is dual boot (Win 7 and Ubuntu 14.04 LTS which I mainly use)
Hi -- I use Ubuntu 14.04 LTS on my E540, too ... and I avoid ever using Windows, and try to never allow Windows to connect to the Internet. I am keeping Windows around until I am sure I won't need to install a BIOS or get warranty service or something.
I just had a look at the User Manual (installed as a .pdf file on your computer, or downloadable from the Lenovo web site), and saw this about the Always On USB connector. This is the one next to the DVD drive:
[1] Always-on USB connector (USB 2.0 connector)
By default, the Always On Universal Serial Bus (USB) connector enables you to charge some mobile digital
devices and smartphones in the following situations:
• When your computer is on or in sleep mode
• When your computer is in hibernation mode or is turned off, but connected to ac power
If you want to charge these devices when your computer is in hibernation mode or is turned off, and the
computer is not connected to ac power, do the following:
• For Windows 7: Start the Power Manager program and click the Global Power Settings tab. Then
select the Enable USB charge from the computer battery even when the computer is off check
box, and click OK or Apply.
• For Windows 8 and Windows 8.1: Press the Windows key to go to the Start screen. Click Lenovo
Settings ➙ Power. Then select Enable USB charge from the computer battery even when the
computer is off check box under Always On USB.
Note: When you attach a USB cable to this USB connector, ensure that the USB mark is facing upward.
Otherwise the connector might be damaged.
UPDATE: I also found the Always On setting at the back of the manual on p.129 -- it's adjustable in the ThinkPad Setup program. You can get to it from the menu when you first turn on your computer (keep pressing Enter while the screen says Lenovo ThinkPad, and you'll hear a BEEP (unless you turned off the beep) and get a list of options. press the appropriate F-key to get to the setup utility.
Did you completely wipe your hard drive when installing? IF the ThinkPad Setup is in the 17-GB recovery partition "partition # 3" at the end of the hard drive (I don't know whether it is or not) I don't know whether/how you can still get to the setup. Let me know!

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