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I have a Dell Precision 450.I am getting a "Previous Voltage Failure" alert. How to turn of this power up aler?

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  • Master
  • 3,799 Answers

If you are still getting it then either your CMOS battery has failed, or your computer power supply has failed,

Posted on Apr 18, 2013

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 37 Answers

SOURCE: Fan Malfunction??

Sounds like a heat issue, pop the side of your case open and turn on the PC, are there fans not moving? Take a close look at your processor fan if there is one.

Posted on Jul 10, 2008

Anonymous

  • 37 Answers

SOURCE: Dell Dimension B110 PC Desktop

Double post?
https://www.fixya.com/support/t765871-fan_malfunction

Posted on Jul 10, 2008

j_warenzek

  • 49 Answers

SOURCE: At start up i get Alert! previous Fan Failure

One of the cooling fans inside the case of the computer (where you put cd's in, and plug all your cords in. There will be at least 2 fans in your unit, but probably 3. The fans keep the computer running cool, preventing damage to the sensitve chips and electronics inside your computer. There is a big fan near the top of the case, this is for the power supply. This is probably NOT the culprit. You can remove one side of the case by removing two of three screws. (dont be nervous, you wont wreck anything.) With the case off, turn the computer on and look for the fan that is not spinning. Turn the computer off. Check the wires running from the fan to the computer (should be three) two are for power, the third sends the signal to the comp telling it its speed and whether it is working or not. If everything checks out, then you just need a new fan. There are only two sizes, but you should be able to remove the fan by disconnecting the wires (mark where they went!!) and removing the phillips (star) screws that mount it to your case. Take the old fan to radio shack or a comp. suppy store and match it up. All computer fans are 12v with 3 connectors. You should be able to manage this repair yourself. You will not break anything, just be sure the power is off when you are removing the fan and take care not to slip and damage something when you are removing and installikng the fan.
Cheers
Jer

Posted on Jan 16, 2010

IQUIT

  • 3940 Answers

SOURCE: dell precision 490 led 1 & 4 on

If you are getting no video at all, then we can use the diagnostic LEDs and the power LED to help determine the failure.
https://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Posted on Mar 29, 2010

swufabuda

swufabuda

  • 219 Answers

SOURCE: my dell dimension 4300 displays

make sure you keyboard is plugged in well. If that doesn't help try a different keyboard.

Posted on Aug 06, 2010

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http://www.dell.com/support/Manuals/us/en/19/Product/precision-470

Click on -
Dell Precision Workstation 470 and 670 Computer User's Guide

In the list on the right side, click on - Tools to Help Solve Problems

In the list on the left side, click on - Diagnostic Lights

Yellow (A) Green (B) Yellow (C)

"A possible VRM 1 failure has occurred"

VRM stands for Voltage Regulator Module.

It regulates Voltage for the Processor.

The Processor MUST have a steady, 'clean', supply of Voltage; and it MUST be kept within the tight voltage range, for the Processor.

Too little, or too much; and the Processor turns off. (BIOS turns it off)

Your motherboard supports two Processors.

1) Processor (CPU_0) Zero which is in the middle of the motherboard, next to the PCI Express x16 slot;

2) and Processor (CPU_1) One, which is next to it.

The VRM 1 has failed. Needs to be replaced.

http://www.ebay.com/itm/DELL-H2703-PRECISION-470-670-VRM-VOLTAGE-REGULATOR-MODULE-TH-0H2703-WS470-WS670-/380369885440

VRM's used are interchangeable.

IMHO you can remove Processor 1 (CPU_1), and it's VRM, and still use the computer; albiet slower though.

For additional questions please post in a Comment.
Regards,
joecoolvette

Mar 22, 2013 | Dell Precision Workstation 670 PC Desktop

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About Dell precision 450 workstation is Dell precision 450 workstation use as desktop PC. thanks


A precision workstation is a high performance desktop system. The 450 is an older model but can still do well as a desktop system

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1 Answer

Dell precision 490 led 1 & 4 on


If you are getting no video at all, then we can use the diagnostic LEDs and the power LED to help determine the failure.
https://www.fixya.com/support/r4282412-find_no_post_diagnostic_information_dell

Mar 29, 2010 | Dell Precision Workstation 490 - MT -...

1 Answer

Fan Malfunction??


Sounds like a heat issue, pop the side of your case open and turn on the PC, are there fans not moving? Take a close look at your processor fan if there is one.

Jul 10, 2008 | Dell Dimension B110 PC Desktop

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