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Dell OptiPlex GX50 User Guide - Page 58

Read Only, USB Emulation, Primary Video Controller, Onboard, Video DAC Snoop, Keyboard NumLock - usb boot

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www.dell.com | support.dell.com With Read Only selected, nothing can be written to any floppy drive or tape drive using the computer's integrated floppy/tape drive controller. (The computer can still read from the drives.) When Read Only is selected, Auto is also in effect, meaning that the computer turns off the integrated floppy drive controller as necessary. Selecting Off turns off the integrated floppy/tape drive controller; this setting is used to control the use of this legacy device or for troubleshooting purposes. - USB Emulation: determines whether the computer's basic input/output system (BIOS) controls Universal Serial Bus (USB) keyboards and mice. When On is selected (the default), the BIOS controls USB keyboards and mice until a USB driver is loaded by the operating system. When Off is selected, the BIOS does not control USB keyboards and mice, although they function during the boot routine. Set USB Emulation to Off if you are using a PS/2-compatible keyboard and mouse. NOTE: For Windows NT®, Off is the default setting. - Primary Video Controller: determines which video controller to use when the computer boots. When Auto is selected, the computer uses a video expansion card, if one is installed or the onboard video controller if a video expansion card is not installed. When Onboard is selected, the computer uses the onboard video controller even if a video expansion card is installed. - Video DAC Snoop: lets you correct video problems that may occur when you use certain video expansion cards. The default is Off. If you are using a video expansion card and problems such as incorrect colors or blank windows occur, set Video DAC Snoop to On. • Keyboard NumLock determines whether your computer boots with the Num Lock mode activated on 101- or 102-key keyboards (it does not apply to 84-key keyboards). When Num Lock mode is activated, the rightmost bank of keys on your keyboard provides the mathematical and numeric functions shown at the top of each key. When Num Lock mode is turned off, these keys provide cursor-control functions shown by the label on the bottom of each key. 56 Advanced Features

Section	Page
1 About Your Computer	3
2 Advanced Features	4
3 Installing Upgrades	4
4 Microsoft® Windows® XP Features	6
5 Technical Specifications	7
6 Solving Problems	7
7 Getting Help	8
8 Additional Information	8
Safety Instructions	11
When Working Inside Your Computer	11
Protecting Against Electrostatic Discharge	12
Ergonomic Computing Habits	13
About Your Computer	15
Finding Information and Assistance	16
Front View	18
Front Panel Door	21
Speaker/Headphone Connector	22
Power Button	22
Power Light	24
Floppy Drive Access Light	25
Hard Drive Access Light	25
Back View	25
Connecting Devices	28
Parallel Connector	29
Mouse Connector	29
USB Connectors	29
Integrated Network Adapter Connector	29
Network Cable Requirements	29
Line-In Jack	30
Line-Out Jack	30
Microphone Jack	30
Serial Port Connectors	30
Keyboard Connector	30
Video Connector	30
Inside Your Computer	31
System Board Components	34
Removing and Attaching the Computer Stand	37
Advanced Features	41
LegacySelect Technology Control	42
Manageability	42
Dell OpenManage IT Assistant	42
Dell OpenManage Client Instrumentation	43
Security	43
Chassis Intrusion Detection	43
Security Cable Slot and Padlock Ring	44
Password Protection	44
System Password	44
Setup Password	47
Disabling a Forgotten Password	48
Computer Settings	49
Entering System Setup	50
System Setup Screens	50
Changing the Boot Sequence	52
Additional System Setup Options	54
If You Have a Problem	60
Jumper Settings	60
Software Installation and Configuration	62
Installing Upgrades	63
Computer Cover	64
Opening the Computer Cover	64
Closing the Computer Cover	66
Expansion Cards	67
Installing an Expansion Card	68
Removing an Expansion Card	75
Expansion Card Cage (Small Desktop Computer Only)	76
Removing the Expansion-Card Cage	76
Replacing the Expansion-Card Cage	77
Memory	78
Installing DIMMs	79
Removing DIMMs	81
Microprocessor	82
Front Panel Inserts	87
Removing Front Panel Inserts—Small Form-Factor and Small Desktop Computers	87
Removing Front Panel Inserts—Small Mini-Tower Computer	90
Replacing Front Panel Inserts	91
Internal Drives	91
IDE Drive Addressing	94
Connecting Drives	95
Hard Drives	97
Detaching Hard Drive Cables	98
Removing a Hard Drive	101
Installing a Hard Drive	104
Reattaching Hard Drive Cables	105
Adding a Second Hard Drive — Small Mini-Tower Computer	109
Floppy Drives	111
Detaching Floppy Drive Cables	111
Removing a Floppy Drive	115
Installing a Floppy Drive and Reattaching Cables	118
CD Drives	123
Detaching CD Drive Cables	123
Removing a CD Drive	127
Installing a CD Drive and Reattaching Cables	129
Battery	133
Replacing the Battery	134
Microsoft® Windows® XP Features	137
Overview	138
Help and Support Center	138
New User Interface	139
Switching to Classic View	139
Clean Desktop Wizard	140
Taskbar Grouping	141
Notification Area Cleanup	141
Files and Settings Transfer Wizard	142
Application and Device Compatibility	143
Program Compatibility Wizard	143
System Restore	144
Using System Restore	145
Restore Process	146
Driver Rollback	147
User Accounts and Fast User Switching	148
How to Use Fast User Switching	148
What Happens When a Fast User Switch Occurs?	149
Special Considerations With Fast User Switching	149
How to Turn Off Fast User Switching	150
How to Add Users	150
Home and Small Office Networking	151
Network Setup Wizard	151
Internet Connection Firewall	152
Technical Specifications	155
Solving Problems	163
Finding Solutions	164
Power Problems	165
Video and Monitor Problems	165
Sound and Speaker Problems	167
Printer Problems	168
Serial or Parallel Device Problems	169
Mouse Problems	171
Keyboard Problems	172
Floppy Drive Problems	173
Hard Drive Problems	175
Battery Problems	178
Expansion Card Problems	179
Recover From a Program That Is Not Responding	180
Restart a Computer That Is Not Responding	181
Repairing a Wet Computer	181
Repairing a Dropped or Damaged Computer	182
Hardware Conflicts	182
Computer Memory Problems	183
System Board Problems	184
Resetting a Damaged System Board	185
Dell Diagnostics	186
When to Use the Dell Diagnostics	186
Features	186
Before You Start Testing	186
Running the Dell Diagnostics	187
Advanced Testing	189
Advanced Testing Help Menu	190
Messages and Codes	191
Computer Messages	191
Computer Beep Codes	198
Warning Messages	201
Diagnostics Messages	201
Diagnostic Lights	201
Front Panel Light	202
Back Panel Lights	203
Software Problems	205
Operating System Compatibility	206
Input Errors	206
Error Messages	206
Device Drivers	207
Memory-Resident Programs	207
Program Conflicts	207
Memory Address Conflicts	208
Interrupt Assignment Conflicts	208
BIOS Recovery Utility	209
Getting Help	211
Help Overview	212
Technical Assistance	212
Help Tools	212
Problems With Your Order	215
Product Information	215
Returning Items for Warranty Repair or Credit	215
Before You Call	216
Dell Contact Numbers	218
Additional Information	233
Regulatory Notices	234
FCC Notices (U.S. Only)	235
IC Notice (Canada Only)	237
CE Notice (European Union)	237
Battery Disposal	238
CCIB Notice (China Only)	239
EN 55022 Compliance (Czech Republic Only)	239
VCCI Notice (Japan Only)	240
MIC Notice (Republic of Korea Only)	241
Polish Center for Testing and Certification Notice	243
Wymagania Polskiego Centrum BadaÒ i Certyfikacji	243
Pozosta³e instrukcje bezpieczeÒstwa	244
BSMI Notice (Taiwan Only)	246
NOM Information (Mexico Only)	247
Información para NOM (únicamente para México)	248
ENERGY STAR® Compliance	249

Match case Limit results 1 per page

Advanced Features

www.dell.com | support.dell.com

With

Read Only

selected, nothing can be written to any floppy

drive or tape drive using the computer's integrated floppy/tape

drive controller. (The computer can still read from the drives.)

When

Read Only

is selected,

Auto

is also in effect, meaning that

the computer turns off the integrated floppy drive controller as

necessary.

Selecting

Off

turns off the integrated floppy/tape drive controller;

this setting is used to control the use of this legacy device or for

troubleshooting purposes.

–

USB Emulation

: determines whether the computer's basic

input/output system (BIOS) controls Universal Serial Bus (USB)

keyboards and mice. When

is selected (the default), the BIOS

controls USB keyboards and mice until a USB driver is loaded by

the operating system. When

Off

is selected, the BIOS does not

control USB keyboards and mice, although they function during

the boot routine. Set USB Emulation to

Off

if you are using a

PS/2-compatible keyboard and mouse.

NOTE:

For Windows NT

Off

is the default setting.

–

Primary Video Controller

: determines which video controller to

use when the computer boots. When

Auto

is selected, the

computer uses a video expansion card, if one is installed or the

onboard video controller if a video expansion card is not installed.

When

Onboard

is selected, the computer uses the onboard video

controller even if a video expansion card is installed.

–

Video DAC Snoop

: lets you correct video problems that may

occur when you use certain video expansion cards. The default is

Off

. If you are using a video expansion card and problems such as

incorrect colors or blank windows occur, set

Video DAC Snoop

•

Keyboard NumLock

determines whether your computer boots with

the Num Lock mode activated on 101- or 102-key keyboards (it does

not apply to 84-key keyboards). When Num Lock mode is activated,

the rightmost bank of keys on your keyboard provides the

mathematical and numeric functions shown at the top of each key.

When Num Lock mode is turned off, these keys provide cursor-control

functions shown by the label on the bottom of each key.