Dell OptiPlex 755

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198 Drives

Disconnect the power and data cable from the drive.

Disconnect the hard drive fan cable from the system board.

1 securing tabs (2)

2 hard drive

Main Page

Default Chapter3
- Table of Contents3
- Contents16
1 Finding Information17
- Warranty19
2 Before You Begin21
- Recommended Tools21
  - Turning off Your Computer21
- Before Working Inside Your Computer21
3 Mini Tower Computer23
- About Your Mini Tower Computer23
- Removing the Computer Cover27
- Inside Your Computer29
- Chassis Intrusion Switch29
- System Board Components32
4 Mini Tower Computer Specifications35
- Cards41
- Drives53
- Processor73
  - Removing the Processor73
  - Installing the Processor74
- I/O Panel77
  - Removing the I/O Panel77
  - Replacing the I/O Panel78
- Power Supply79
  - Replacing the Power Supply79
  - DC Power Connectors81
- Speakers85
  - Installing a Speaker85
  - Removing a Speaker86
5 Desktop Computer87
- About Your Desktop Computer87
- Removing the Computer Cover90
- Inside Your Computer91
- Chassis Intrusion Switch92
- Removing the Heat Sink Assembly94
- System Board Components95
6 Desktop Computer Specifications97
- Cards103
- Drives127
- Processor149
  - Removing the Processor149
  - Installing the Processor150
- I/O Panel153
  - Removing the I/O Panel153
  - Replacing the I/O Panel154
- Power Supply155
  - Replacing the Power Supply155
  - DC Power Connectors157
- Speakers163
  - Installing a Speaker163
  - Removing a Speaker164
7 Small Form Factor Computer165
- About Your Small Form Factor Computer165
- Removing the Computer Cover168
- Inside Your Computer169
- Chassis Intrusion Switch170
- System Board Components172
- Small Form Factor Computer Specifications175
- Cards181
- Drives195
- Processor213
  - Removing the Processor213
  - Installing the Processor214
- I/O Panel217
  - Removing the I/O Panel217
  - Replacing the I/O Panel218
- Power Supply219
  - Replacing the Power Supply219
  - DC Power Connectors221
- Speakers225
  - Installing a Speaker225
  - Removing a Speaker225
8 Ultra Small Form Factor Computer227
- About Your Ultra Small Form Factor Computer227
- Removing the Computer Cover232
- Inside Your Computer233
- Chassis Intrusion Switch233
- System Board Components236
  - Cable Cover (Optional)237
    - Attaching the Cable Cover237
    - Removing the Cable Cover237
- Connecting the AC Power Adapter238
- Dell Badge239
- Ultra Small Form Factor Computer Specifications241
- Drives247
  - General Installation Guidelines247
  - Hard Drive248
    - Installing a Hard Drive249
    - Replacing a Hard Drive Fan252
- Module Bay255
- Processor261
- Speakers267
  - Installing a Speaker267
  - Removing a Speaker268
9 Advanced Features269
- Legacyselect Technology Control269
- Manageability269
- Physical Security274
- Trusted Platform Module (TPM)275
  - Enabling the TPM Feature275
- Security Management Software276
- Computer Tracking Software276
- About Smart Cards and Fingerprint Readers276
- Password Protection277
- System Setup280
- Booting to a USB Device288
  - Memory Key288
  - Floppy Drive289
- Jumper Settings289
- Clearing Forgotten Passwords290
- Clearing CMOS Settings291
- Hyperthreading and Multi-Core Technology292
- Power Management for Windows XP and Windows Vista292
  - Options in Windows XP292
  - Options in Windows Vista294
- About RAID Configurations295
10 Battery303
- Replacing the Battery303
11 Replacing the System Board307
- Removing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers307
- Replacing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers311
12 Memory313
- DDR2 Memory Overview313
- Addressing Memory Configurations314
- Installing Memory314
- Removing Memory316
13 Replacing the Computer Cover317
- Mini-Tower, Desktop, and Small Form Factor Computers317
- Ultra Small Form Factor Computers317
14 Installing Your Computer in an Enclosure319
15 Cleaning Your Computer323
- Computer, Keyboard, and Monitor323
- Mouse323
  - Cleaning a Non-Optical Mouse323
  - Cleaning an Optical Mouse323
- Floppy Drive324
- Cds and Dvds324
16 Microsoft Windows Features325
Microsoft ® Windows ® Features325
- Transferring Information to a New Computer325
  - Microsoft ® Windows ® XP325
    - Running the Files and Settings Transfer Wizard with the Operating System Media325
    - Running the Files and Settings Transfer Wizard Without the Operating System Media326
  - Microsoft Windows Vista327
- Setting up a Home and Office Network328
  - Connecting to a Network Adapter328
  - Network Setup328
    - Windows XP328
    - Windows Vista329
17 Troubleshooting331
- Battery Problems331
- Card Problems331
- Drive Problems332
- Power Lights344
- System Lights345
- Diagnostic Lights347
- Beep Codes350
- System Messages351
- Cmos Battery352
- Dell Diagnostics353
  - When to Use the Dell Diagnostics353
- Drivers356
- Troubleshooting Software and Hardware Problems in the Microsoft ® Windows ® XP and Microsoft Windows Vista ® Operating Systems358
- Restoring Your Operating System359
Getting Help365
- Obtaining Assistance365
- Problems with Your Order367
- Product Information367
- Returning Items for Warranty Repair or Credit367
- Before You Call367
- Contacting Dell370
- FCC Notices (U.S. Only373

Dell OptiPlex 755 - Page 198

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