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HP ProBook 635 User Guide - Page 48

Conserving battery power, Identifying low battery levels, Resolving a low battery level

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Select the question mark icon in the taskbar. 2. Select Troubleshooting and fixes, and then in the Diagnostics section, select HP Battery Check. If HP Battery Check indicates that your battery should be replaced, contact support. HP Support Assistant provides the following tools and information about the battery: ● HP Battery Check ● Information about battery types, specifications, life cycles, and capacity Conserving battery power Follow these steps to conserve battery power and maximize battery life. ● Lower the brightness of the display. ● Turn off wireless devices when you are not using them. ● Disconnect unused external devices that are not plugged into an external power source, such as an external hard drive connected to a USB port. ● Stop, disable, or remove any external media cards that you are not using. ● Before you leave your work, initiate Sleep or shut down the computer. Identifying low battery levels When a battery that is the sole power source for the computer reaches a low or critical battery level, the computer warns you in one of several ways. ● The battery light (select products only) indicates a low or critical battery level. - or - ● The Power icon shows a low or critical battery notification. NOTE: For additional information about the Power icon, see Using the Power icon and Power Options on page 35. The computer takes the following actions for a critical battery level: ● If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains briefly in the Sleep state and then shuts down and loses any unsaved information. ● If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates Hibernation. Resolving a low battery level You can quickly resolve low battery level conditions. Resolving a low battery level when external power is available Connect one of the following to the computer and to external power. ● AC adapter ● Optional docking device or expansion product ● Optional power adapter purchased as an accessory from HP 36 Chapter 6 Managing power

Section	Page
Getting started	13
Finding information	13
Components	15
Locating hardware	15
Locating software	15
Right	15
Left	16
Display	17
Keyboard area	18
Touchpad	18
Touchpad settings	18
Adjusting touchpad settings	18
Turning on the touchpad	19
Touchpad components	19
Lights	19
Button, speakers, and fingerprint reader	20
Special keys	22
Action keys	23
Hot keys (select products only)	25
Bottom	25
Labels	26
Using a SIM card (select products only)	27
Determining the correct SIM card size for your computer	27
Inserting a SIM card in an external slot	27
Network connections	29
Connecting to a wireless network	29
Using the wireless controls	29
Wireless button	29
Operating system controls	29
Connecting to a WLAN	30
Using HP Mobile Broadband (select products only)	30
Using eSIM (select products only)	31
Using GPS (select products only)	31
Using Bluetooth wireless devices (select products only)	31
Connecting Bluetooth devices	31
Using NFC to share information (select products only)	32
Connecting to a wired network	32
Connecting to a local area network (LAN) (select products only)	32
Using HP LAN-Wireless Protection (select products only)	33
Using HP MAC Address Pass Through (select products only)	34
Navigating the screen	35
Using touchpad and touch screen gestures	35
Tap	35
Two-finger pinch zoom	35
Two-finger slide (touchpad and precision touchpad)	36
Two-finger tap (touchpad and precision touchpad)	36
Three-finger tap (touchpad and precision touchpad)	36
Four-finger tap (touchpad and precision touchpad)	37
Three-finger swipe (touchpad and precision touchpad)	37
Four-finger swipe (precision touchpad)	37
One-finger slide (touch screen)	38
Using an optional keyboard or mouse	38
Using an on-screen keyboard (select products only)	38
Entertainment features	39
Using a camera (select products only)	39
Using audio	39
Connecting speakers	39
Connecting headphones	39
Connecting headsets	40
Using sound settings	40
Viewing or changing sound settings	40
Using the control panel to view and control audio settings	40
Using video	40
Connecting video devices using an HDMI cable (select products only)	41
Connecting a high-definition TV or monitor using HDMI	41
Setting up HDMI audio	41
Turning on HDMI audio	41
Turning off HDMI audio	42
Discovering and connecting wired displays using MultiStream Transport	42
Connecting displays to computers with AMD or NVIDIA graphics (with an optional hub)	42
Discovering and connecting to Miracast-compatible wireless displays (select products only)	42
Discovering and connecting to Intel WiDi certified displays (select Intel products only)	43
Connecting to Intel WiDi certified displays	43
Opening Intel WiDi	43
Using data transfer	43
Connecting devices to a USB Type-C port (select products only)	43
Managing power	45
Using Sleep and Hibernation	45
Initiating and exiting Sleep	45
Initiating and exiting Hibernation (select products only)	46
Shutting down (turning off) the computer	46
Using the Power icon and Power Options	47
Running on battery power	47
Using HP Fast Charge (select products only)	47
Displaying battery charge	47
Finding battery information in HP Support Assistant (select products only)	47
Conserving battery power	48
Identifying low battery levels	48
Resolving a low battery level	48
Resolving a low battery level when external power is available	48
Resolving a low battery level when no power source is available	49
Resolving a low battery level when the computer cannot exit Hibernation	49
Factory-sealed battery	49
Running on external power	49
Security	51
Protecting the computer	51
Using passwords	52
Setting passwords in Windows	52
Setting passwords in Computer Setup	52
Managing a BIOS administrator password	53
Setting a new BIOS administrator password	53
Changing a BIOS administrator password	53
Deleting a BIOS administrator password	54
Entering a BIOS administrator password	55
Using DriveLock Security Options	55
Selecting Automatic DriveLock (select products only)	55
Enabling Automatic DriveLock	55
Disabling Automatic DriveLock	56
Entering an Automatic DriveLock password	56
Selecting manual DriveLock	56
Setting a DriveLock master password	57
Enabling DriveLock and setting a DriveLock user password	57
Disabling DriveLock	58
Entering a DriveLock password	58
Changing a DriveLock password	58
Windows Hello (select products only)	59
Using antivirus software	59
Using firewall software	60
Installing software updates	60
Using HP Client Security (select products only)	60
Using HP Device as a Service (select products only)	60
Using an optional security cable (select products only)	61
Using a fingerprint reader (select products only)	61
Maintenance	62
Improving performance	62
Using Disk Defragmenter	62
Using Disk Cleanup	62
Using HP 3D DriveGuard (select products only)	62
Identifying HP 3D DriveGuard status	63
Updating programs and drivers	63
Cleaning your computer	63
Enabling HP Easy Clean (select products only)	63
Removing dirt and debris from your computer	63
Cleaning your computer with a disinfectant	64
Caring for wood veneer (select products only)	65
Traveling with or shipping your computer	65
Backing up, restoring, and recovering	67
Backing up information and creating recovery media	67
Using Windows tools for backing up	67
Using the HP Cloud Recovery Download Tool to create recovery media (select products only)	67
Restoring and recovering your system	67
Creating a system restore	68
Restoring and recovery methods	68
Recovering using HP Recovery media	68
Changing the computer boot order	68
Using HP Sure Recover (select products only)	69
Computer Setup (BIOS), TPM, and HP Sure Start	70
Using Computer Setup	70
Navigating and selecting in Computer Setup	70
Restoring factory settings in Computer Setup	70
Updating the BIOS	71
Determining the BIOS version	71
Preparing for a BIOS update	71
Downloading a BIOS update	71
Installing a BIOS update	72
Changing the boot order using the f9 prompt	72
TPM BIOS settings (select products only)	72
Using HP Sure Start (select products only)	73
Using HP PC Hardware Diagnostics	74
Using HP PC Hardware Diagnostics Windows (select products only)	74
Using an HP PC Hardware Diagnostics Windows hardware failure ID code	74
Accessing HP PC Hardware Diagnostics Windows	74
Accessing HP PC Hardware Diagnostics Windows from HP Help and Support	74
Accessing HP PC Hardware Diagnostics Windows from Support Assistant	75
Downloading HP PC Hardware Diagnostics Windows	75
Downloading the latest HP PC Hardware Diagnostics Windows version from HP	75
Downloading the HP PC Hardware Diagnostics Windows from the Microsoft Store	75
Downloading HP Hardware Diagnostics Windows by product name or number (select products only)	75
Installing HP PC Hardware Diagnostics Windows	76
Using HP PC Hardware Diagnostics UEFI	76
Using an HP PC Hardware Diagnostics UEFI hardware failure ID code	76
Starting HP PC Hardware Diagnostics UEFI	76
Downloading HP PC Hardware Diagnostics UEFI to a USB flash drive	77
Downloading the latest HP PC Hardware Diagnostics UEFI version	77
Downloading HP PC Hardware Diagnostics UEFI by product name or number (select products only)	77
Using Remote HP PC Hardware Diagnostics UEFI settings (select products only)	77
Downloading Remote HP PC Hardware Diagnostics UEFI	78
Downloading the latest Remote HP PC Hardware Diagnostics UEFI version	78
Downloading Remote HP PC Hardware Diagnostics UEFI by product name or number	78
Customizing Remote HP PC Hardware Diagnostics UEFI settings	78
Specifications	79
Input power	79
Operating environment	80
Electrostatic discharge	81
Accessibility	82
HP and accessibility	82
Finding the technology tools you need	82
The HP commitment	82
International Association of Accessibility Professionals (IAAP)	83
Finding the best assistive technology	83
Assessing your needs	83
Accessibility for HP products	83
Standards and legislation	84
Standards	84
Mandate 376 – EN 301 549	84
Web Content Accessibility Guidelines (WCAG)	84
Legislation and regulations	85
Useful accessibility resources and links	85
Organizations	85
Educational institutions	85
Other disability resources	86
HP links	86
Contacting support	86

Match case Limit results 1 per page

Select the question mark icon in the taskbar.

Select

Troubleshooting and

ﬁxes

, and then in the

Diagnostics

section, select

HP Battery Check

. If HP

Battery Check indicates that your battery should be replaced, contact support.

HP Support Assistant provides the following tools and information about the battery:

●

HP Battery Check

●

Information about battery types,

speciﬁcations,

life cycles, and capacity

Conserving battery power

Follow these steps to conserve battery power and maximize battery life.

●

Lower the brightness of the display.

●

Turn

oﬀ

wireless devices when you are not using them.

●

Disconnect unused external devices that are not plugged into an external power source, such as an

external hard drive connected to a USB port.

●

Stop, disable, or remove any external media cards that you are not using.

●

Before you leave your work, initiate Sleep or shut down the computer.

Identifying low battery levels

When a battery that is the sole power source for the computer reaches a low or critical battery level, the

computer warns you in one of several ways.

●

The battery light (select products only) indicates a low or critical battery level.

– or –

●

The Power icon

shows a low or critical battery

notiﬁcation.

NOTE:

For additional information about the Power icon, see

Using the Power icon and Power Options

on page

The computer takes the following actions for a critical battery level:

●

If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains

brieﬂy

the Sleep state and then shuts down and loses any unsaved information.

●

If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates

Hibernation.

Resolving a low battery level

You can quickly resolve low battery level conditions.

Resolving a low battery level when external power is available

Connect one of the following to the computer and to external power.

●

AC adapter

●

Optional docking device or expansion product

●

Optional power adapter purchased as an accessory from HP

Chapter 6

Managing power