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HP EliteDesk 705 G1 Maintenance and Service Guide - Page 218

Password security and resetting CMOS, Resetting the password jumper, through Computer Setup. See

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10 Password security and resetting CMOS This computer supports security password features, which can be established through the Computer Setup Utilities menu. This computer supports two security password features that are established through the Computer Setup Utilities menu: setup password and power-on password. When you establish only a setup password, any user can access all the information on the computer except Computer Setup. When you establish only a power-on password, the power-on password is required to access Computer Setup and any other information on the computer. When you establish both passwords, only the setup password will give you access to Computer Setup. When both passwords are set, the setup password can also be used in place of the power-on password as an override to log in to the computer. This is a useful feature for a network administrator. If you forget the password for the computer, you can clear that password so you can gain access to the information on the computer by resetting the password jumper. CAUTION: Pushing the CMOS button will reset CMOS values to factory defaults. It is important to back up the computer CMOS settings before resetting them in case they are needed later. Back up is easily done through Computer Setup. See Computer Setup (F10) Utility on page 157 for information on backing up the CMOS settings. Resetting the password jumper CAUTION: If you enable the stringent security feature in Computer Setup and you forget the setup password or the power-on password, the computer is inaccessible and can no longer be used. Enabling the stringent password disables the ability to reset the password by moving the jumper on the system board. If you lose or forget the password, the system board must be replaced. This scenario is not covered under warranty. To prevent the computer from becoming permanently unusable, record your configured setup password or power-on password in a safe place away from your computer. Without these passwords, the computer cannot be unlocked. To disable the power-on or setup password features, or to clear the power-on or setup passwords, complete the following steps: 208 Chapter 10 Password security and resetting CMOS

Section	Page
Product Features	11
Standard Configuration Features	11
Microtower	11
Small form factor	11
Desktop mini	12
Front panel components, microtower	13
Front panel components, small form factor	14
Front panel components, desktop mini	15
Rear panel components, microtower	16
Rear panel components, small form factor	17
Rear panel components, desktop mini	18
Serial Number Location	19
Illustrated parts catalog	20
Microtower (MT) chassis spare parts	20
Computer major components	20
Cables	22
Misc parts	23
Drives	25
Misc boards	26
Small Form Factor (SFF) chassis spare parts	27
Computer major components	27
Cables	29
Misc parts	30
Drives	32
Misc boards	33
Desktop Mini (DM) chassis spare parts	34
Computer major components	34
Cables	35
Misc parts	36
Drives	37
Routine care, SATA drive guidelines, and disassembly preparation	38
Electrostatic discharge information	38
Generating static	38
Preventing electrostatic damage to equipment	39
Personal grounding methods and equipment	39
Grounding the work area	39
Recommended materials and equipment	40
Operating guidelines	40
Routine care	41
General cleaning safety precautions	41
Cleaning the Computer Case	41
Cleaning the keyboard	41
Cleaning the monitor	42
Cleaning the mouse	42
Service considerations	42
Power supply fan	42
Tools and software Requirements	42
Screws	43
Cables and connectors	43
Hard Drives	43
Lithium coin cell battery	43
SATA hard drives	44
SATA hard drive cables	44
SATA data cable	44
SMART ATA drives	44
Cable management	45
Removal and replacement procedures – Microtower (MT) chassis	46
Preparation for disassembly	46
Access panel	47
Front bezel	48
Optical drive bezel blank	49
Battery	50
Memory	52
DIMMs	52
DDR3-SDRAM DIMMs	52
Populating DIMM sockets	52
Installing DIMMs	53
Expansion cards	55
Drives	59
Drive positions	61
Removing a slim optical drive	61
Installing a slim optical drive	62
Removing a hard drive	63
Installing a hard drive	64
Drive power cable	68
Front I/O and power switch assembly	69
Heat sink	71
Processor	72
Speaker	73
Rear chassis fan	75
Power supply	76
System board	78
System board callouts	80
Removal and replacement procedures – small form factor (SFF) chassis	82
Preparation for disassembly	82
Access panel	83
Front bezel	83
Front bezel security	84
Bezel blanks	85
Battery	86
Memory	88
DIMMs	88
DDR3-SDRAM DIMMs	88
Populating DIMM sockets	88
Installing DIMMs	89
Expansion card	91
Drives	95
Drive positions	96
Installing and Removing Drives	96
Removing a 3.5-inch device	98
Installing a 3.5-inch device	99
Removing a slim optical drive	102
Installing a slim optical drive	103
Removing and replacing a 3.5-inch hard drive	105
Removing a 2.5-inch hard drive	108
Installing a 2.5-inch hard drive	108
Drive power cable	110
Baffle	111
Hood sensor	112
Front I/O assembly	113
Power switch	116
Speaker	118
Heat sink	119
Processor	122
Power supply	124
System board	126
System board callouts	128
Using the Small Form Factor Computer in a Tower Orientation	130
Removal and replacement procedures – desktop mini (DM) chassis	131
Preparation for disassembly	131
Access panel	132
Hard drive	133
Speaker	136
Front bezel	138
Memory	139
SODIMMs	139
DDR3-SDRAM SODIMMs	139
Populating SODIMM sockets	140
Replacing SODIMMs	141
Replacing the battery	143
Heat sink	146
Processor	147
Fan	148
Drive cage	149
WLAN module	151
M.2 solid-state drive	153
External antennas (select models only)	155
System board	158
System board callouts	161
WLAN antennas	162
Changing from desktop to tower configuration	166
Computer Setup (F10) Utility	167
Computer Setup (F10) Utilities	167
Using Computer Setup (F10) Utilities	168
Computer Setup—File	169
Computer Setup—Storage	170
Computer Setup—Security	171
Computer Setup—Power	174
Computer Setup—Advanced	175
Recovering the Configuration Settings	177
Troubleshooting without diagnostics	178
Safety and comfort	178
Before you call for technical support	178
Helpful hints	179
Solving general problems	180
Solving power problems	183
Solving hard drive problems	185
Solving media card reader problems	187
Solving display problems	188
Solving audio problems	192
Solving printer problems	194
Solving keyboard and mouse problems	195
Solving Hardware Installation Problems	197
Solving Network Problems	199
Solving memory problems	202
Solving CD-ROM and DVD problems	204
Solving USB flash drive problems	206
Solving front panel component problems	207
Solving Internet access problems	207
Solving software problems	208
POST error messages	210
POST numeric codes and text messages	210
Interpreting POST diagnostic front panel LEDs and audible codes	215
Password security and resetting CMOS	218
Resetting the password jumper	218
Changing a Setup or Power-On password	219
Deleting a Setup or Power-On password	220
Clearing and resetting the CMOS	220
HP PC Hardware Diagnostics	222
Why run HP PC Hardware Diagnostics	222
How to access and run HP PC Hardware Diagnostics	222
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device	222
System backup and recovery	224
Backing up, restoring, and recovering in Windows 8.1 or Windows 8	224
Creating recovery media and backups	224
Restoring and recovering using Windows tools	224
Using Reset when the system is not responding	225
Recovery using the Windows recovery USB flash drive	225
Recovery using Windows operating system media (purchased separately)	226
Backing up, restoring, and recovering in Windows 7	226
Creating recovery media	227
Creating recovery media using HP Recovery Manager (select models only)	227
Creating recovery discs with HP Recovery Disc Creator (select models only)	228
Creating recovery discs	228
Backing up your information	229
System Restore	229
System Recovery	230
System Recovery when Windows is responding	230
System Recovery when Windows is not responding	231
System Recovery using recovery media (select models only)	231
Using HP Recovery Disc operating system discs (select models only)	232
Power Cord Set Requirements	234
General Requirements	234
Japanese Power Cord Requirements	234
Country-Specific Requirements	235
Statement of Volatility	236
Specifications	238
MT Specifications	238
SFF Specifications	240
DM Specifications	241

Match case Limit results 1 per page

Password security and resetting CMOS

This computer supports security password features, which can be established through the Computer Setup

Utilities menu.

This computer supports two security password features that are established through the Computer Setup

Utilities menu: setup password and power-on password. When you establish only a setup password, any user

can access all the information on the computer except Computer Setup. When you establish only a power-on

password, the power-on password is required to access Computer Setup and any other information on the

computer. When you establish both passwords, only the setup password will give you access to Computer

Setup.

When both passwords are set, the setup password can also be used in place of the power-on password as an

override to log in to the computer. This is a useful feature for a network administrator.

If you forget the password for the computer, you can clear that password so you can gain access to the

information on the computer by resetting the password jumper.

CAUTION:

Pushing the CMOS button will reset CMOS values to factory defaults. It is important to back up

the computer CMOS settings before resetting them in case they are needed later. Back up is easily done

through Computer Setup. See

Computer Setup (F10) Utility

on page

157

for information on backing up the

CMOS settings.

Resetting the password jumper

CAUTION:

If you enable the stringent security feature in Computer Setup and you forget the setup

password or the power-on password, the computer is inaccessible and can no longer be used.

Enabling the stringent password disables the ability to reset the password by moving the jumper on the

system board.

If you lose or forget the password, the system board must be replaced. This scenario is not covered under

warranty.

To prevent the computer from becoming permanently unusable, record your configured setup password or

power-on password in a safe place away from your computer. Without these passwords, the computer

cannot be unlocked.

To disable the power-on or setup password features, or to clear the power-on or setup passwords, complete

the following steps:

208

Chapter 10

Password security and resetting CMOS