Dell Precision 390 Support Question
Dell Precision 390 Support Question
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Question posted by onaditya on September 8th, 2014
Ell Precision 390 Will Turn Turn On
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Current Answers
Answer #1: Posted by freginold on November 20th, 2014 10:16 AM
freginold
Member since:
December 20th, 2011 Points: 23,253,885
Member since:
December 20th, 2011 Points: 23,253,885
Often when a computer won't turn on, it's because one of two components has failed: either the power supply unit or the motherboard (assuming you've ruled out the power coming in from the wall or surge protector as the problem).
Power supplies are generally not terribly expensive, compared to other components. If you're not getting any power at all, the power supply is a likely culprit. It's a much cheaper option to try than the motherboard. If you have a voltmeter or a power supply tester, you can check the power supply to verify that it's not supplying any power.
The motherboard is expensive to replace, so if you think the motherboard is the problem (if you've tried the power supply or ruled it out as the problem) it might be cheaper to get a new computer than have the motherboard repaired or replaced.
Power supplies are generally not terribly expensive, compared to other components. If you're not getting any power at all, the power supply is a likely culprit. It's a much cheaper option to try than the motherboard. If you have a voltmeter or a power supply tester, you can check the power supply to verify that it's not supplying any power.
The motherboard is expensive to replace, so if you think the motherboard is the problem (if you've tried the power supply or ruled it out as the problem) it might be cheaper to get a new computer than have the motherboard repaired or replaced.
Related Dell Precision 390 Manual Pages
Quick Reference Guide - Page 3
... 14 About Your Computer 19
Front View (Tower Orientation 19 Back View (Tower Orientation 21 Front View (Desktop Orientation 22 Back View (Desktop Orientation 24 Back-Panel Connectors 25 Inside View 27 System Board Components 28 Locating Your User's Guide 29 Removing the Computer Cover 30 Caring for ...
Quick Reference Guide - Page 5
....
What Are You Looking For?
• A diagnostic program for my computer • Drivers for my computer • My computer documentation • My device documentation • Desktop System Software (DSS)
Find It Here
Drivers and Utilities CD (also known as a PDF at support.dell.com. NOTE: Additional information may be found at...
Quick Reference Guide - Page 7
... technical support
• Reference - If you should also reinstall the DSS utility.
Computer documentation, details on the screen. Certified drivers, patches, and software updates
• Desktop System Software (DSS) - DSS provides critical updates for your region to use the customized Dell Premier Support website at premier.support.dell.com. NOTE: Corporate...
Quick Reference Guide - Page 8
... reinstall drivers for instructions. After you ordered.
Dell Supported Linux Sites
• http://linux.dell.com • http://lists.us.dell.com/mailman/listinfo/linux-precision • http://docs.us.dell.com/docs/software/oslinux/
8
Quick Reference Guide See your computer. NOTE: The Operating System CD is optional and may not...
Quick Reference Guide - Page 13
NOTE: If your computer has a sound card installed, connect the speakers to the card.
5 Connect the power cables and turn on the computer and monitor. Quick Reference Guide
13 4 Connect the speakers.
Quick Reference Guide - Page 14
... documentation that the software or device is compatible with the software or device or contact the vendor to the network adapter. Setting Up Your Computer (Desktop Orientation)
CAUTION: Before you install any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
6 Install additional software...
Quick Reference Guide - Page 18
... setup for more information on the computer and monitor. Before you purchased an IEEE 1394 card. Your desktop computer has an optional front IEEE 1394 connector. To purchase a card, contact Dell.
4 Connect the...or device or contact the vendor to the card. Connect the power cables
5 and turn on the IEEE 1394 card, see your computer, read the documentation that did not come with...
Quick Reference Guide - Page 19
... for high-speed data devices such as digital video cameras and external storage devices. Wait until this light turns off before you remove the floppy from the drive.
4 floppy-drive eject button Press this button o ...computer reads data from or writes data to the optional floppy drive. Wait until this light turns off before you remove the CD or DVD from or writes data to the hard drive...
Quick Reference Guide - Page 20
... is configured as a wake device in the User's Guide. See "Power Problems" in a power-saving mode. • Blinking or solid amber -
Use the lights to turn the computer on when the computer sends or receives data over a network connection.
For more information.
For more information on booting to attach a personal computer...
Quick Reference Guide - Page 22
... digital video cameras and external storage devices.
22
Quick Reference Guide Wait until this light turns off before you remove the CD or DVD from the drive.
3 floppy-drive eject button... button
Press this button to eject a floppy disk from the optional floppy drive.
4 CD- Front View (Desktop Orientation)
1
23 4 5
6
7
8
13
12 11
10
9
1 floppy-drive activity light
The floppy...
Quick Reference Guide - Page 23
... be on the diagnostic code. NOTICE: To avoid losing data, do not use the back USB connectors for more information.
Use the microphone connector to turn the computer off . • Steady green - Press this button to attach a personal computer microphone for more information. Instead, perform an operating system shutdown. See "Power...
Quick Reference Guide - Page 25
....
• Off -
If your hard drive. The computer is automatically disabled if the computer detects an installed card containing a parallel connector configured to the computer. Turn off the computer and any attached devices before you have a USB printer, plug it into the green mouse connector. A good connection exists between a 10-Mbps...
Quick Reference Guide - Page 30
...scratching either the computer or the surface on which it from the electrical outlet before you turn off after the operating system shutdown process finishes.
2 Ensure that ask you for information... metal surface to dissipate any open programs, click the Start button, and then click Turn
Off Computer. NOTICE: Ensure that could harm internal components.
CAUTION: To guard against electrical...
Quick Reference Guide - Page 31
..., and keyboard (see your User's Guide for Your Computer
To help maintain your computer, follow these suggestions: • To avoid losing or corrupting data, never turn off your computer when the hard drive light is on. • Schedule regular virus scans using virus software. • Manage hard drive space by periodically...
Quick Reference Guide - Page 34
4 Click the System Restore tab. 5 Ensure that Turn off System Restore is detected or terminate testing if a certain number of errors occur • Access online Help screens that describe the tests and how ...
Quick Reference Guide - Page 35
... and Utilities CD. 2 Shut down your User's Guide.
If you see the Microsoft Windows desktop. On the next start the Dell Diagnostics. 9 Select Run the 32 Bit Dell Diagnostics from...the computer. If you see your computer and try again. Starting the Dell Diagnostics From Your Hard Drive
1 Turn on (or restart) your User's Guide.
NOTE: If you see a message stating that appears. 7 ...
Quick Reference Guide - Page 36
... and look it up if the monitor cannot display errors or problems. This series of beeps during start-up in the Product Information Guide. • Turn on your printer if one beep. This beep code tells you begin any of your computer's components and devices, such as connectors.
Before You Start...
Quick Reference Guide - Page 37
...
operating condition after POST.
When the computer starts normally, the lights flash.
After the computer starts, all four lights display solid green briefly and then turn off after
a short time if the computer is in a normal off or green. Code 3-4-2 3-4-3 4-2-1 4-2-2 4-2-3 4-2-4 4-3-1 4-3-3 4-3-4 4-4-1 4-4-2 4-4-3 4-4-4
Cause Screen retrace failure Search for video ROM failure No timer...
Quick Reference Guide - Page 42
...your shipping box for a Y-cable. For the tower computer, see page 10 and for the
desktop computer, see your monitor has a (Tower Orientation)" on connecting
monitors to use two monitors?
... into the monitor cables).
An adapter should be (Desktop Orientation)" on the card.
For the tower information. NOTE: The diagnostic lights turn off after a short time if the computer is ...
Quick Reference Guide - Page 45
... beep codes, 36 conflicts, 32 Dell Diagnostics, 34
Hardware Troubleshooter, 32 headphone
connector, 20, 23 Help and Support Center, 7
I
IEEE connectors, 19, 22
installing parts turning off your computer, 30
IRQ conflicts, 32
K
keyboard connector, 26
Index
45
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