HP ProBook 4540s OS/Software :: Battery Drains When Laptop Turned Off - Unknown Device
Aug 21, 2014
I just purchased a new probook 4540s core i5 with win7 x64 system.
Firstly, When battery full charged then turned laptop off for a few hours or next day it becomes 99% or 98% although its plugged in Ac power. Shutdown again for 1 hour and turn on it turns to 97%. Is that ok or there is problem in battery specially it shows that ( Plugged in, Not chareged ) so laptop should operate at AC adapter and battery remain 100%. Secondly, I have an unknown device can't find it as shown in figure below.
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Apr 10, 2012
This is my 3rd day since i bought this new HP probook 4540s [Product No. B9A39PA#UUF] and i like it, i made a clean install for windows 7 ultimate x64 and i've just realised that the hp drivers support page dose not has any drivers for the ultimate version, so i downloaded the proffesional drivers, now i have all devices are installed except two devices named unknown device
The hardware Ids:
1- unknown device
USBVID_138A&PID_003D&REV_0104USBVID_138A&PID_003D
2- unknown device
ACPIHPQ6000*HPQ6000
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Jan 20, 2015
I currently have a HP ProBook 4540s Notebook PC(Energy Star) laptop and found that my Base System Device Drivers are missing. I have been trying very hard to find them but to no avail.
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May 5, 2014
I have probook 4540s and i installed windows 7 prof. (X64) i have the following problems in the device manager:
1- base system device (Location: PCI Slot 2 (PCI bus 3, device 0, function 0))
2- base system device (Location: PCI Slot 2 (PCI bus 3, device 0, function 3))
3- unknown device (location: on PCI bus)
Those are the three drivers ...
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Aug 28, 2014
I have a 1 year old HP Probook 4540s that recently has the following problem.
When unplugged the laptop suddenly shuts down even tough the battery shows 29% still remaining.
I receive no notification from Windows or anything, it just shut downs like when the battery reaches 0%.
Then in order to start it again, I need to plug it in.
I previously didn't have any battery problems and running the HP Assistant informs me that the battery is ok and it doesn't need replacements. Basically the laptop is dead at 28%-29% battery life.
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Jan 31, 2014
I have a hp probook 4540s ,when i put charger it shows charging light but if i press power button lap top does not turn on.
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Sep 7, 2014
I have an HP Pavilion dv5-1183cl that has been upgraded from Windows Vista to Windows 7 Ultimate (32bit) and I have some issues.I have four errors showing up in my device manager, three Base System Device and one Unknown Device, and I don't know what they are or where to get the drivers (since I don't know what they are). Additionally, the battery will not charge (there does not appear to be anything wrong with it physically). I am wondering if the below errors are related to the battery issue. Below are the hardware IDs for each error entry.
Base System Device (PCI bus 6, device 0, function 1):
PCIVEN_197B&DEV_2382&SUBSYS_3603103C&REV_00PCIVEN_197B&DEV_2382
&SUBSYS_3603103CPCIVEN_197B&DEV_2382&CC_088000PCIVEN_197B&DEV_2382&CC_0880
[Code]....
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Jan 22, 2008
I was thinking of purchasing a Dell XPS 1530 for college. I have everything customized exactly the way I want it but I was wondering if the bluetooth option was absolutely necessary for college campuses? I really do not want bluetooth in my laptop if I do not have to get it as I hear bluetooth drains laptop battery power, but is it required by todays standards?
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Oct 20, 2014
I have a HP Probook 4540s Notebook PC. I reinstalled the operating system (Windows 7 Ultimate) recently and installed all the necessary drivers required for the PC. But now as I connect a USB 3.0 hard disk into the USB 3.0 ports ( the left two ports), i get an error message. The message is shown below:
"Device can perform faster : This USB Mass Storage Device can transfer information faster if it is connected to a Super-Speed USB 3.0 Port"
The speed of the data transfer also seems to be very low, in the ranges of 20-30 Mbps.
I'm not sure if I have installed the correct driver for the hardware. As for now, as shown in the Control Panel, I have installed "Intel USB 3.0 Extensible Host Controller Driver".
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Jan 1, 2010
I have an Acer 4810TZ timeline (SU4100 processor). I had charged the battery up to 100% and then left on an 11 day vacation. When I came back, I found the battery to have only a 16.7% charge left on it. Is this an excessive lost of battery over an 11 day period? My laptop was left shut down (it was not in sleep or hibernate mode). I would think the drain on the battery would be minimal.
Is my battery defective or is this normal? I've had the laptop for about 2 months.
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Jul 29, 2012
Problem: Fingerprint Scanner - Windows log in does not give option to log in via fingerprint scanner.
Overview: After installing fingerprint drivers from the HP site and using the HP Protect Tools to successfully enroll fingerprint, I tried logging in via this method but the windows log in screen does not display this option. Device manager correctly identifies and shows the fingerprint sensor - however, the control panel says no biometric devices detected.
Details of what steps I took trying to make the scanner work are given below.
Specs:
1) Probook 4540s
2) Windows 7 64-bit
3) i5-3210m, 1Gb Hd 7650m, 4 Gb 1333Mhz, 750Gb 5400rpm, VFS 491 Fingerprint scanner.
Details of the problem and steps I took to install drivers:
After a fresh installation of Windows 7, I went to the HP driver site to download the latest drivers for Probook 4540s:
[URL]
I installed the drivers in roughly this order:
1)realtek ethernet controller drivers,
2)audio drivers,
3) the chipset and USB 3.0 drivers (but not the Intel MEI driver)
4) Intel video driver: faced an issue such that drivers were not being allowed to install. After disabling switchable graphics in the bios, I was able to get these drivers to install.
5) AMD video drivers: installed after the intel HD graphics driver - installed but Catalyst Control Center was not being displayed. So I re-enabled switchable graphics in BIOS, re-installed these drivers and CCC was now available.
6) HP hotkey support
7) HP universal camera driver
8) Validity Fingerprint sensor
9) Synaptics Touchpad driver
10) Atheros wifi & bluetooth
11) Jmicron card reader
After driver installation, I installed the HP Protect Tools. After prompting for a PC reboot - which I did - it asked for setup of security etc.. Part of this pocess was the enrolling of my fingerprints - successful. However, upon log off/ restart of windows, an option to log in with the fingerprint scanner did not appear in the Windows log in screen.
I opened the Control Panel, and found there was no biometric devices tab, even though device manager showed biometric device and validity sensor (VFS 491). I then proceeded to uninstall HP protect tools and the validity driver for the fingerprint sensor, then made sure these services were running:
-Credential Manager
-Remote Procedure Call (RPC)
-DCOM Server Process Launcher
-RPC Endpoint Mapper
-Windows Biometric Service
-Plug and Play
After reboot HP Protect Tools as before would enroll my fingerprints, but again no prompt at windows login came to log in with fingerprint. However, one change after the installtion of [URL] was that in control panel there is now a tab for biometric devices; however, it says that windows did not find any biometric devices installed. An image is attached showing both the device manager and the control panel!
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Nov 26, 2012
I recently purchased a ProBook 4540S C6Z35UT notebook computer. I love the hardware. It came with Windows 8 64-bit. I never tried Windows 8 before, but I've used Windows 7 a lot. After playing with it quite a bit, I've decided I really don't like Windows 8 at all. The Start screen just gets in the way. I want a standard desktop where I can plop down some common docs I'm referencing, common program icons, etc. The flipping to the neo-Win7 desktop that Windows 8 does is quite lame. If you run a desktop program from the start menu, you flip to the desktop, but then it stays there after that program exits. It's a very "hack" design. The start menu is cute for touch pads ("surface"s) but not really laptop/desktop appropriate, imho.
So my question is: if I purchase a Windows 7 or Windows 7 Pro 64-bit version of Windows, can I install it on this machine and will it have the right driver support? Also, in case something gets messed up, is there a way to create a Windows 8 install DVD for my laptop to get it back to original state?
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Aug 29, 2014
I'm using the W540 with an ultradock and external monitors. After upgrading my W540 to win8.1 64 bit, device manager is showing an unknown device. I'm not quite sure what it is, but almost everything seems to be working fine and Lenovo solution center isn't finding any driver updates.
I did notice that the solution center hardware scan did not test the video card memory and listed that test as N/A. Video and monitors seem to be working fine though and both nvidia and intel graphics show up in device manager.
Device manager lists the device in question as follows:
Device instance path: ROOTSYSTEM001
Hardware Ids: rootiwdbus
Device stack: DriverPnPManager
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Jan 17, 2014
I have just installed Windows 8.1 x64 on my Lenovo E330.
I downloaded drivers from the website, and installed all of them. But after that there's one device listed as Unknown in device manager, and I can't figure our which device it is.
Hardware ID is {48126E0D-4BDD-4D26-8A24-569C7AB522D6}SettingsDriver, so that doesn't identify the device.
Info from Solution Centre: Product: 3354AF7
How to identify what driver I missed to install
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Oct 17, 2014
When I plug power, battery indicator bulb indicating and when i press turn on button on laptop, suddenly battery indicator bulb turned off and laptop wont start. then i removed battery and install it again. then again battery indicator bulb indicating. this sequence happening again and again. what could be the reason.....
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Feb 8, 2014
When I start HP ProBook 4540s, how do I skip HP Login and go directly to Windows 8?
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Oct 3, 2014
I've bought a probook 4540s recently. everything is fine and just I have a problem with its bluetooth. I can't send anything to my laptop via bluetooth. my phone is successfully added to my bluetooth devices & I can send files from laptop to my phone, but nothing happens when I try to send items from my phone to laptop. btw no error message is shown to me.
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Mar 18, 2013
I'm trying to migrate my HP from the hard-drive to a new ssd I bought. As far as I know windows 8 is supposed to activate based on the code burned into the machines bios, so I bought some hp recovery dvds online as HP recovery manager no longer seems to ship with these machines, so I couldn't make one, and reinstalled windows 8 onto the machine. After install and connecting to the internet the activation failed, it said the key was blocked. This can't be, this machine came with windows 8 preinstalled, so it must have a valid key and license I've already paid for.
I've tried burning reinstall media using the Microsoft media creation tool but that too fails once it connects to the internet to validate the activation
I would prefer to fresh reinstall, I'm not even sure the drive I took out works anymore or isn't altered at this point, plus its larger than my ssd so cloning would be a problem. And I've also read of problems cloning windows 8 secure boot installs regardless. In any case I would like to some how be able to get this recovery to work.
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Aug 21, 2014
I was watching a movie on Netflix, and all of the sudden the screen kept scrambling itself. I shut it down and now when I restart my laptop all I get is a white scrambled screen. I restarted it again and now I still can't do anything and it won't shut down unless I hold down the power button for a few seconds...
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Apr 5, 2014
i need the finger print driver for my hp probook 4540s. i am using windows 8.1 64bit.
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Mar 11, 2010
I got my new laptop today, and got rid of the installed Dell Crap and installed my Windows 7 Ultimate 64-bit.
Now under my Device Manager I've got two issues:
Base System
Base System
I contacted Dell, they said they won't support my laptop since I don't have their operating system on it. All I want to know is what drivers I need. I can't believe they couldn't let me know.
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Aug 4, 2014
I just bought a B590, model 20208, with, i3-3110m, 500GB HDD, GeForce 720M.I installed Win 7 64bits, but in Device Manager, before installing all the drivers appeared Other Devices an Unknown Device with thise details: code 28, Device type: Other devices; Location: on Microsoft ACPI-Compliant Embedded Controllert . After installing drivers, the problem persists.Another problem was with PCI express but resolved with Intel Management Engine Interface drivers.Other problem resolved was with the GeForce 720 M videocard; wasn't recognized but resolved with the last driver from GeForce site. the last problem remained it's The Unknown Devices.
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Jun 12, 2014
I discovered lately after updating my BIOS from hp website URL....that when i use my dvd driver to read dvds he gives me a message that telling me and I don't know how to get my original BIOS before updating .
CPU:intel core i5 3210M 2.5Gz 4 coresRAM:4 GB
Video:Inernal intel hd family 4000 HD External Readon HD 6000-7000OS:Windows 8 64-bit
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Sep 13, 2014
I've Probook 4540s notebook , I tried installing watchdogs , after restarting windows doesn't start up correctly , a black screen with blinkin cursor and wifi Icon. I'm using safe mode now :/
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Jul 6, 2013
I just bought ProBook 4540s (I7-3632QM)with Product number : H5L54ES#ABV
I installed windows 7 ultimate, I installed all required drivers, in between the wireless network was working and I could navigate the internet but after I installed all required drivers and Device manager seemed fine my Wireless network dose not work and says :
Connected to unidentified Network No internet Access, and cant see my wireless network
I tried the network button (Wifi/Bluetooth) changing the mode from white light to yellow light and both modes still not working....
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Nov 26, 2014
I want to install AMD Video Driver and Control Panl alongside with Intel Video Driver and Control Panel.
Here is My Laptop System Information :
OS Name Microsoft Windows 8.1 Enterprise
Version 6.3.9600 Build 9600
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name TUHIN
System Manufacturer Hewlett-Packard
[code]....
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Jul 11, 2014
Was this ever resolved? I am having the same issue on the same computer that I cannot manually adjust the screen brightness using the function + F2 or function + F3 screen brightness keys.
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Dec 4, 2009
does the bluetooth module drain the battery in the studio xps 16. and is it a significant amount?
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Nov 27, 2013
I'm running Windows 8.1 on my HP ProBook 450 and after I installed all the "mandatory" drivers I still have 2 unknown devices.
Here's the info about the two unknown devices:
First unknown device:
ACPIVEN_HPQ&DEF_6007
ACPIHPQ6007
*HPQ6007
Second unknown device:
ACPIVEN_HPQ&DEF_6001
ACPIHPQ6001
*HPQ6001
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Sep 16, 2014
after installation I have two unknown devices.
the first is :
ACPI/HPQ6007
*HPQ6007
the second is:
Řadič "dont know, how to say in English" USB (universal serial bus)
HP probook 450 g1, win7 sp1 64
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