Dell OptiPlex 755 Support Question
Dell OptiPlex 755 Support Question
Find answers below for this question about Dell OptiPlex 755.Need a Dell OptiPlex 755 manual? We have 3 online manuals for this item!
Question posted by mtlydon on June 4th, 2011
Memory Replacement
I replaced my memory with 3-2gb modules. I operate win7 pro 64 bit and the computer beeps. Tried reseating the modules and the unit still beebs.
Any tricks on memory install would be appreciated.
Current Answers
Answer #1: Posted by kcmjr on June 5th, 2011 1:00 AM
kcmjr
Member since:
May 5th, 2011 Points: 4,254,255
Member since:
May 5th, 2011 Points: 4,254,255
I suspect that you have installed the wrong type or amount of memory. There are two versions of this system, the small form factor and the full desktop.
You say you installed 3 2 GB sticks. Assuming that the RAM type is correct I suspect you must use either 2 or 4 sticks, not 3. This is typical with most PC systems. Try removing the thirs stick and see what happens. Keep the memory installed in pairs ins slots 1/2 or 3/4, do not split the sticks, i.e. don't fill slot 1 and 3.
Optiplex 755 Memory Specifications:
This systems supports PC2-5300/6400 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2 (non-ECC) memory
Each memory slot can hold DDR2 PC2-5300 with a maximum of 2GB per slot.
Standard Memory 512 MB (removable)
Desktop version: Maximum Memory 8.0 GB
Slots - 4
You say you installed 3 2 GB sticks. Assuming that the RAM type is correct I suspect you must use either 2 or 4 sticks, not 3. This is typical with most PC systems. Try removing the thirs stick and see what happens. Keep the memory installed in pairs ins slots 1/2 or 3/4, do not split the sticks, i.e. don't fill slot 1 and 3.
Optiplex 755 Memory Specifications:
This systems supports PC2-5300/6400 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2 (non-ECC) memory
Each memory slot can hold DDR2 PC2-5300 with a maximum of 2GB per slot.
Standard Memory 512 MB (removable)
Desktop version: Maximum Memory 8.0 GB
Slots - 4
Small Form Factor version: Maximum Memory: 4GB
Slots: 2
Memory Upgrade for Dell Optiplex 755 Desktop Computer, the Dell Optiplex 755 Desktop Computer takes the PC2-5300/6400 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2. Memory Type, and comes installed with 512 MB (removable) of Memory. You can upgrade your Dell Optiplex 755 Desktop Computer to up to a maximum of 8.0 GB Memory, the system has 4 sockets to install Memory, already with 512 MB (removable) standard Memory installed. For best Computer performance use the maximum amount of allowed Memory per slot for your Computer.
User guide is here: http://support.dell.com/support/edocs/systems/op755/en/UG/PDF/JN4602en.pdf
Licenses & Certifications: Microsoft, Cisco, VMware, Novell, FCC RF & Amateur Radio licensed.
Related Dell OptiPlex 755 Manual Pages
Quick Reference
Guide - Page 6
Dell™ Product Information Guide
• How to remove and replace parts
Dell™ OptiPlex™ User's Guide
• Specifications
Microsoft Windows Help and Support
• How to configure system settings
Center
• How to remove and install parts
• Warranty information • Terms and Conditions (U.S. only) • Safety instructions • Regulatory ...
Quick Reference
Guide - Page 67
....
• If two or more memory modules are not lit after the system successfully boots to install additional memory modules (one module (see "Contacting Dell" in the User's Guide). Quick Reference Guide
67
A possible processor failure has occurred.
• Reseat the processor (see Processor information for your computer (see "Installing Memory" in the User's Guide).
•...
Quick Reference
Guide - Page 68
...If the computer starts normally, continue to install additional memory modules (one module (see "Installing Memory" in the User's Guide) and restart the computer. A possible USB failure has occurred. Suggested Resolution
• Reseat any installed graphics cards (see the "Cards" information for your system).
• If available, install a working memory of the same type into your computer...
User's Guide - Page 12
... Screws 310 Ultra Small Form Factor System Board Screws 311 Replacing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra Small Form Factor Computers 311
12 Memory
DDR2 Memory Overview 313 Addressing Memory Configurations 314 Installing Memory 314 Removing Memory 316
13 Replacing the Computer Cover
Mini-Tower, Desktop, and Small Form Factor Computers 317 Ultra Small Form...
User's Guide - Page 35
... 32-bit operating system: 4 GB F0000h
Intel Q35 Express Chipset w/ICH9DO 64 bits 32 bits eight 24 32 Mb integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF Capable of 10/100/1000 communication iAMT 3.0
Mini Tower Specifications
35 Mini Tower Computer Specifications
Microprocessor Microprocessor type
Internal cache
Memory Type Memory connectors Memory modules supported...
User's Guide - Page 97
... NOTE: 512 MB is the minimum shipping configuration. 64-bit operating system: 8 GB 32-bit operating system: 4 GB F0000h
Intel Q35 Express Chipset w/ICH9DO 64 bits 32 bits eight 24 32 Mb integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF Capable of 10/100/1000 communication iAMT 3.0
Desktop Computer Specifications
97 L2: up to 8 MB...
User's Guide - Page 175
...
Memory Type Memory connectors Memory modules supported Minimum memory
Maximum memory
BIOS address Computer Information Chipset Data bus width Address bus width DMA channels Interrupt levels BIOS chip (NVRAM) NIC
The following are supported: • Intel® Core™2 • Intel vPro™ • Intel Celeron® L1: up to 128 KB; single-channel: 512 MB 64-bit operating...
User's Guide - Page 241
...4 GB F0000h
Intel Q35 Express Chipset w/ICH9DO 64 bits 32 bits eight 24 32 Mb integrated network interface with ... 1 GB; Ultra Small Form Factor Computer Specifications
Microprocessor Microprocessor type
Internal cache
Memory Type Memory connectors Memory modules supported Minimum memory
Maximum memory BIOS address Computer Information Chipset Data bus width Address bus width DMA channels Interrupt...
User's Guide - Page 281
... to make that option and the option's current and
Key Functions - Empty memory slots are denoted as "Empty." System Setup Screens
The system setup screen displays...64-bit technology. features that define the configuration of these fields can be modified.
available settings. Identifies the CPU type, bus speed, clock speed, and L2 cache size. None of your computer and installed...
User's Guide - Page 303
.... then reconnect the computer, turn it is incorrectly installed. however, without a battery; In this section, follow... Locate the battery socket.
Battery
303 The battery can operate your computer without a battery, the configuration information is ... system setup. 2 Follow the procedures in system setup, replace the battery.
Replace the battery only with a message such as:
Time-of...
User's Guide - Page 313
... in the order indicated on the system board. DDR2 Memory Overview
• When installed in DIMM connectors 1 and 2 or -
A pair of matched memory modules installed in pairs, DDR2 memory modules should be of the slowest module installed. • Be sure to install a single memory module in DIMM connector 1, the connector closest to operate, but with a slight reduction in any other...
User's Guide - Page 314
... you purchased the new modules from Dell. You should install your original memory modules in pairs either in the ...modules that you are using a 64-bit operating system, your computer will support a maximum of 8 GB (2-GB DIMMs in DIMM
and 2 (white securing clips)
connectors 3 and 4 (black securing clips)
NOTICE: If you remove your original memory modules from the computer during a memory...
User's Guide - Page 319
... is at least 30% airflow through the enclosure (front and back). Use the following guidelines when installing your computer in this guide reflect the maximum ambient operating temperature. NOTICE: The operating temperature specifications indicated in an enclosure.
Installing Your Computer in an Enclosure
319 The room's ambient temperature needs to 18° F) temperature margin...
User's Guide - Page 338
..., install additional memory (see
"Installing Memory" on page 314). • Reseat the memory modules (see "Installing Memory" on...memory you begin any mouse extension cables, and connect the mouse directly to the computer. • Verify that resolves the problem. • See the software documentation for minimum memory requirements. Connect a properly working mouse to the computer, then try...
User's Guide - Page 347
...computer. A possible graphics card failure has occurred.
• Reseat any of the lights help troubleshoot a problem, your computer).
• If the problem persists, contact Dell (see "Installing Memory" on page 370). When the computer starts normally, the lights flash before booting to install additional memory modules (one module (see "Contacting Dell" on page 370). Solving Problems...
User's Guide - Page 348
... to install additional memory modules (one module (see "Contacting Dell" on page 314) and restart the computer. A possible USB failure has occurred. Reinstall all USB devices and check all power and data cables.
Light Pattern (continued)
Problem Description
Suggested Resolution
A possible floppy drive or hard drive failure has Reseat all cable connections. occurred. Memory modules...
User's Guide - Page 375
...- A program designed to as an interface between the video circuitry and the computer memory. and operating system-independent. The length of heat output. The length of the faster interface between the computer hardware and the operating system.
bootable CD -
The standard unit for videorelated tasks. A measurement of time (years) during which the computer attempts...
User's Guide - Page 381
...to as the CPU (central processing unit). If the PCI Express chip set . Personal Computer Memory Card International Association - The organization ...800 x 600, is a local bus that supports 32-and 64-bit data paths, providing a high-speed data path between the ...readme files provide installation information and describe new product enhancements or corrections that have an operating system to be...
User's Guide - Page 383
... or formatting functionality (the option to an unacceptable voltage level. trusted platform module -
System memory dynamically allocated to the computer.
S/PDIF - A power management mode that serves as those that allows the transfer of video memory installed in to shut down all unnecessary computer operations to 1400 x 1050.
Prevent voltage spikes, such as an interface...
User's Guide - Page 384
...measurement of electric potential or electromotive force. A unit of memory chips dedicated to the open position. For ...z colors. The amount of video memory installed primarily influences the number of colors that...-based software, such as Windows operating systems, displays in your computer. V -...geographic area than relying on the Windows desktop. write-protected - Use write-protection ...
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