Question about Computers & Internet
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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Posted on Jan 02, 2017
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
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.
Posted on Jan 16, 2010
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.
Posted on Mar 29, 2010
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