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Wont boot red light

Pc turn on.hear fans running red and green light next to on/off switch on

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  • Expert
  • 152 Answers

Please clean RAM and insert it then reboot pc it will mostly works.

Posted on Feb 18, 2014

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Posted on Jan 02, 2017

  • 139 Answers

SOURCE: pc wont boot

Make sure the monitor video and power cables are properly plugged in. If you have more than one video adapter in your computer, try plugging the video cable in the other one. Try another video monitor just to confirm that your monitor is not defective, or test your monitor on another computer.

If those steps don't reveal the problem, your computer probably has an internal problem with one or more of these components:

-Power supply module
-Video adapter
-Motherboard
-Processor.

This will require testing by an experienced computer technician to determine what's going on.

Posted on Jan 13, 2008

  • 90 Answers

SOURCE: my computer turns on but wont do anything

check the caps lock led and number lock led wotking?

Posted on Apr 05, 2009

oldrogers
  • 53 Answers

SOURCE: pc wont boot up, instead a red light flickers.

Flickering LED means power supply is overloaded with something. It might be inside of the supply, but sometimes it is something else. Try that:
1. Disconnect everything from the motherboard except power supply and power button;
2. Disconnect all power connectors from all drives;
2. Remove any cards from the motherboard so all you have is power supply and motherboard with CPU and RAM, nothing else. You can keep connected the monitor and keyboard;
3. Press Power button. Will motherboard turn on normally?

If no - check electrolytic capacitors especially around the CPU, if some of them are "popped" replace them.
If yes - connect drives and cards one per time to localize the problem.

Posted on Sep 14, 2009

  • 37 Answers

SOURCE: gateway 5228 wont boot no lights on keyboard

does it load the bios screen? Does it get to the windows load screens if it does go to the bios screen? Does the computer power on at all?

Sometimes what happens is the bios chip can be faulty or die and this will have to be replaced to fix the issue. If the computer is not powering on then it is more than likely a power supply issue.

(just in case, you might want to make sure that all of the adapters that come from the power supply are connected to the motherboard as well)

Posted on Sep 30, 2009

joecoolvette
  • 5660 Answers

SOURCE: HP Pavillion pc doesn't boot up ... no fan, no start sound, nothi

Bad Power Supply.

The blinking green light on the power supply, is a diagnostic light that indicates this.

Suggestion is to;
1) Test the Power Supply voltages
Or
2) Replace the Power Supply with a Known to be good, Compatible unit, for a test.

[Compatible:

A) It is an ATX style of power supply.
The style used by 90 percent, of personal computers out there.

Example: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4975140&CatId=106

The test Power Supply unit should be mounted in the computer, for testing.
The power cables only reach so far, plus it is safer.

B) At least a 250 to 300 Watt unit, for a test unit. More Wattage is okay.

(The power supply that comes with the Pavilion a1310n, is a 300 Watt unit.

The 250 Watt unit stated above is just for a Test.
You are testing to see if the Power Supply is the problem.

More wattage is okay as a computer only uses what it needs.
If you have a 1000 Watt power supply installed, and the computer only needs 100 Watts; the computer only uses 100 watts.

The computer Will Not burn up, by installing a power supply with more Wattage than the original)

C) Correct amount of power cables, and correct kind.

Observe the power cables from the existing power supply, that are plugged into the various hardware components in the computer, and to the motherboard.

The test unit has to have the same power cables, and the correct amount of them.

Need help identifying these power cables, reply in a Comment.

The above may sound funny. Who has a spare power supply laying around, other than someone really committed to computers?

You may find yourself, or someone you may associate with, has a computer sitting in a closet, basement, attic or garage, that has a working power supply, (And is compatible), and can be used for a test unit.

Test the Voltages.

There are three main Voltages, produced by a personal computer power supply.
(DC. Direct Current)

1) 3.3 Volts (Wires that have Orange insulation)
2) 5 Volts (Red wires)
3) 12 Volts (Yellow wires)

(Two D cell flashlight batteries are 3 Volts {DC)

ANY Black wire is a Ground wire.

Use an economical multimeter to test the Voltages, or a power supply tester.

Multimeter:
Power Supply on.
Positive probe lead (Red) connects to the power wire to be tested.
Negative probe lead (Black) touches ANY Black wire.
(Black insulated wires are Ground wires)

This is one example of a power supply tester,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5250576&CatId=5471

What causes Power Supply failure?

A) Inside of computer is dirty, as well as the inside of the Power Supply.

Computer unplugged from power, (Computer case open, and anti-static precautions observed), a can of compressed air for computers is used on a regular basis as needed, to help prevent this.

There are two cooling components for a SMPS.
(Switched Mode Power Supply)

1) The internal fan
2) The Heatsink's inside

http://en.wikipedia.org/wiki/Switched-mode_power_supply

A Heatsink, is an object used to draw heat from whatever hardware component, it is placed against.

A Heatsink is generally just a flat, square piece of metal, that has tall, thin fins protruding from it.

The flat metal base absorbs heat, whereby it is absorbed by the tall thin fins, and radiated away.

In the case of a Power Supply, there is an internal fan which draws air in-between the fins, helping to carry the heat away.

Once the fan blades, (Plus center hub, and surrounding cage), become coated with gunk, and the Heatsink fins become coated, the cooling capacity drops tremendously.

Heat = Wasted Energy.
The Power Supply has to produce more power, to keep up with loss of energy.
Eventually hardware components inside the Power Supply fail.

B) Cheap quality components used in the power supply. (Cheap quality power supply)

Awaiting any question you may have regarding this.
Post in a Comment.
(Believe upper right of your page)

Posted on May 31, 2010

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My medion desktop model pc mt 14 wont switch on from the mains


Whenyou plug in the power cord is there any lights whatsoever on the laptop, wherethe plug goes in or on the AC Adapter of the power cord?

When you press the power button do you hear fans running, hard drive spinning,lights on the computer, hear any beeps or lights constantly blinking, hear theDvD/CD drive click and the light on the drawer of the DvD/CD turn on for asecond or two? If so the laptop is trying to boot or may have booted, butthe screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous. Most times the problemis with the memory or Video Card. Count the Blinking Lights or Beeps and takenote of their pattern (1 Long or 1 Long followed by 2 Short).

Maybe your power cord is bad if you don't get anything to happen whatsoeverwhen you press the power button.

Maybe you have a Static Charge Buildup. Remove the Power Cord, then Pressand Hold the power button for 30 seconds. After 30 seconds plug the powercord back in and hit the power button to see if it boots.

Maybeyour memory is bad or the memory slot is bad.Removethe Power Cord, Open the Case and remove one of the memory chips. Set thechip aside then try rebooting the computer. If it boots, then you knowthe memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and tryrebooting. If it fails take the chip out and set it aside, then put theother chip in and try booting it in both slots. If it boots, just toverify that the chip set aside is bad, mark an x on it and put it into the openmemory chip slot and try booting.
Maybeyour power supply is bad. Sometimes there is enough power to make thepower light come on but not enough power to make the fan turn on or harddrive spin.

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When i turned on switch dell vostro 230 it give no display and led colour is red


No Display, so does it seem like the computer booted up and is running except that the Display is black? Do you hear fans running, disk drive spinning, blinking lights or beeps?

I'm going to assume that in your case since you mentioned a red light that it is not booting up all the way. Therefore your problem is probably with the memory, the video card or some other motherboard issue.

Remove the Power Cord, Remove the Battery, Remove the cover that houses the memory on the bottom of the laptop then remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.

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1 Answer

Flashing green lightbulb


Do you hear the fans running? Do you hear the hard drive spinning? Did anything ever appear on the monitor?

Remove the Power Cord, Open the Case and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.

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Make sure all fans are running,defective Fan can cause this,also Ballast board is what powers Lamp on. If ballast is bad Lamp will not light.

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Red light blinks and wont stay on when push power button


You can do this fan test.

Turn the main switch off, hold the eject button.

While holding the eject button, turn the main switch on, when the power light is green, release it and you should hear a beep.

The fan will operate at the highest speed possible and will eject any disc that is inside.

After about 15 seconds the fan will stop spinning and the ps3 will beep 3 times and the red light will blink. When this happens, turn the main switch off and on then turn it on normally.

Tell me how this goes!!



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I have a acer aspire T135 and when I turn it on to boot I get the red and green light with a loud whirring noise from the cpu anyone know what is happening and how can i fix it please


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Red wireless light wont turn green, no wireless connection found, stays red all the time dv7-1020 pavillion notebook, no wireless switch that i can see just the light in upper right, stays red, all the...


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and you like me will not only be the proud owner of a really cool looking paperweight but also will never consider buying anything from HP again.

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Hp pavillion 533w wont boot up green light on front comes on but thats it no fans coming on either


Hi ,

If the green light comes on on the front panel then it means the fan is spinning so what u can do is a self test for the monitor.Disconnect the vga cable from the back panel of the computer tower and then check if there is a message displayed on the monitor that should say check video signal or no inoput signal ,if there is no such message displayed then it means the monitor is a fault .If not then reset the memory card and then check .U can also run a test for the motherboard to do this u will have to remove the memory card and then turn the computer on if u hear long beeping noise it means the motherboard is fine .If u dont hear any sound then the mother board needs to be repaired or replaced...

all the best

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