Question about Gigabyte GA-EP45-UD3P - Motherboard - ATX - iP45 - LGA775 Socket - UDMA133, Serial ATA-300

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Gigabyte ga-ep45-ud3p (REV.1.6) motherboard

Will not power up not even spin fans but power supply is good

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Hello,

If this is a new install, make sure the board is grounded to the base with the standoff post. If you do not tighten your screws or miss these standoff, your system will short and not power up.

Good Luck
C2Solutions

Posted on Jul 04, 2010

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Fans not working in hp pavilion p7 1003w


Are you sure they are getting power? Check by using a plug off of an old fan. Power it up and read the voltage on the red and black wire. Should be 12 volts. Check by swapping SYS FAN With JP1. If there is no voltage then I would say your looking for a burnt or bad voltage regulator on the board. It could also be a bad power supply. Use a Q-tip to first spin the fans with the PC off. Do they spin freely?
25386666-d5sfsixxp3s0mc4y4voabxpt-2-0.gifMother Board
If they dont, replace them. If they do spin free, turn on the PC.(Make sure to go into the bios setup so id doesnt continue to boot.) Try to spin the fans now. If the dont spin free, it means there is voltage there, but the fan is toast. Replace them.
FOR A QUICK FIX: If it is the power supply or MB . They sell an adapter that plugs into the HD power. get as many as you need and a power splitter or two depending in your power supply configuration. Plug the fans into the adapters then go into the bios setup and disable the fan warning. The fans will be on high at all times. The MB will have no control over the speed. Good luck. Hope this helps.

Jan 27, 2015 | HP Pavilion P7-1003wb Desktop Pc Bundle...

1 Answer

No Display


If you are testing the motherboard by removing items plugged into it, remember to leave the CPU Heatsink on if the CPU is still in the socket otherwise the CPU will overheat in seconds or minutes and could be damaged.

If you power on the system, do the fans spin? such as the CPU heatsink fan? If no fans are spinning that are connected to the motherboard, see if the fan is spinning inside the power supply using a flashlight if needed. If not, try a known good power outlet or different plug on your surge bar or a new surge bar.
Even if the power supply fan is spinning, the power supply could be faulty. Borrow or buy one that matches the current wattage written on the side (ie: "output 350W")

Post back here with more info or if anything of this sounds like the issue you are having.

Apr 13, 2014 | Foxconn G41MXE Motherboard

2 Answers

My computer suddenly lost power and now it won't even turn on.


replace the power supply of your cpu check if the blower fan is spinning during power on it means that your power supply is good if not replace the power supply with a new one

Sep 12, 2011 | Dell Inspiron 537 MT Desktop Computer

1 Answer

My Acer ASpire M1641 desktop isn't booting, not even to the BIOS screen. It was running & I was on the internet when it flashed a blue screen too fast to read, then stopped dead. I get no display on...


Even though the fan on the graphics card spins, it may still be the power supply. Try another power supply before anything else, its your cheapest option as well as a new motherboard will cost more


if this helped you please vote

Feb 25, 2011 | Acer Computers & Internet

1 Answer

Actually my system is having the problem like motherboard LED is not glowing, powersupply fan processor fan not spinning sometimes it works properly by putting supply ON. All power supplies are normal from...


I would still say it is power supply! Check with power supply from another computer.

You have intermittent power supply to the fan, you have no power supply to the motherboard, processor fan is not spinning , not is indicator diod on the board, first instance and easiest to check is always power supply.

If power supply is not a reason, check on motherboard high volume capacitors, especially around processor, capacitors should have flat tops, if tops are buckled, that meant capacitor/s is/are gone and motherboard can be used as a decoration, if you do not have special soldering iron to replace surface mount circuitry, do not bother even to think to replace them.

Aug 15, 2010 | Gigabyte GA-8I845GVM-RZ Motherboard

1 Answer

Fan not spinning


Not a good thing in power packs, they get hot quite quickly, check the fan is not jamming on the metal housing and in spins freely, if you technically minded you can open up the power supply, there are four little screws on the top, unscrew them and pull the part of the housing away. Trace the wires from the fan to the connecter on the power supply board and give it push and wiggle.

Put the housing back on and give it another try, if still not spinning you might have to change the fan which are quite easy to change. There are usually four screws holding the fan in place at the back of the power supply unscrew the screws and pull the wire from the connecter and the fan should come out.

The fans are not very expensive you can normally pick one up the same size for about £3-5 from any computer shop or out of an old computer for nothing.

hope this helps.

Jan 19, 2010 | Fujitsu Siemens (B14L5105E035A) Power...

2 Answers

THE FANS WORK BUT NOTHING SHOWS ON THE MONITOR AND ITS QUIETER THAN USUAL


1.Cooling fans work?
2.No Signal shown on monitor?
3.Harddrive doesn't make any noise? (To explain. Harddrive is inactive. Not spinning, and the arms aren't moving back, and forth across the platters)

Suggest it's a bad power supply. A common occurrence.

Why?
1.Owner fails to keep the inside of the computer clean, and the power supply.

Dust/Dirt/Spider Webs/Lint, you name it, builds up inside. This foreign material clogs up cooling components. Specifically the Processor fan, and Heatsink, plus the power supply fan, and heatsink's inside the power supply.

Result?
Processor heats up. Takes more power to run, until eventually it turns off. (Processor's have a thermal limit. Once this thermal limit is exceeded, BIOS turns the processor off)

Power supply heats up. Fan blades and center hub collects Dust/Dirt, as well as heatsink's inside the power supply. Cooling capacity drops tremendously.

Heat = Wasted Energy. The power supply puts out more, and more power to keep up. Eventually components inside the power supply fail. They burn up. (More on this to follow)

2.Cheap power supply. Cheap construction, and cheap materials used. Pre-built computer manufacturers generally use cheaply made power supply's. Saves them money.

A.Gauge of wiring used inside is too small.
B.Electrolytic Capacitors used are of an inferior design, and of cheap quality.
C.Circuit design is below par.
D.Other components used are of low quality.

So how does a bad power supply still light-lights, and spin fans?

Bad power rail.
Personal computer power supply's put out three main voltages.
A.12 Volts
B.5 Volts
C.3.3 Volts

Electrolytic Capacitors used in a power supply are Filters. They filter the incoming AC electricity, and the rectified DC. When one or more capacitors fail, or are failing, a bad power rail results.

1.ALL the lights uses less than 1 Watt.
2.EACH fan uses 2 to 3 Watts.

A typical Processor uses 55 to 125 Watts. Depends on which processor it is.

So you see, you can have enough power to light those lights, spin fans, and even spin the harddrive motor, but not enough to turn the processor on. (Or if it does turn on, not enough to keep it running)

You can easily prove it's the power supply at fault, if you have a known, good, power supply to use for a test.
Another 300 Watt unit that has the same power cables. (Should be stated as has at LEAST the same power cables. It can have more power cables, and these just won't be used)

No processor running you get no signal to the monitor. Computer isn't working to give a signal to the monitor.

Computer is quieter than normal, because you don't hear any harddrive noise. No processor running to access the Operating System on the harddrive. (Or programs and applications)

(Windows XP is an example of an Operating System. O/S)

Just for information, this link gives details of the components inside a harddrive. Gives you more info about the Arms, and Platters I referred to above.
Just thought I would include it. It is not advertising for this website, but is included for reference.

http://computer.howstuffworks.com/hard-disk.htm


Nov 13, 2009 | Gateway (ATX-300-12EB3) (ATX30012EB3)...

2 Answers

No power when press the button, power plug is good?


Good day sir/ma'am, chances are that your power supply box is the faulty part. But to make sure let us test your power supply box. here are the steps:
  1. PC is off, open the side panels of the CPU, disconnect the 20(or 24) pin molex connector from the motherboard.
  2. Get a piece of jumper wire, about 4 inches and splice the ends.
  3. On the molex connector, locate the green wire, then using the jumper wire, short it with the black wire (there are lots of black wires there).
  4. look at the exhaust fan, at this point it should be spinning (good). if not here are the other possible outcome: (1) the fan did not spin. replace the power supply box with a new one. (2) the fan spins momentarily then stops, this condition only occur once. Its either your power supply has no load (intermittent symptoms), or the switching controller stage part is faulty. Better buy a new one than have a headache. (3) blows a fuse. replace the entire box.
If you have a good power supply, install it on your CPU and test.

Oct 28, 2009 | Acer Aspire L100 PC Desktop

1 Answer

System will not start up. Cpu fan spins once, then nothing.


It is more than likely that when your old power supply died a death, it damaged some components on the motherboard. Replace the Motherboard and chip, and you should be back in business. You can pick up some good value bundles to save money on buying the parts seperately. The power supply working again after turning off and on, is because there is a little trip in the power supply that triggers when it detects a fault. Powering down resets that trip allowing it to try and work again.

Mar 05, 2009 | MSI K7N2 DELTA2-FSR NVIDIA nFORCE2 ULTRA...

2 Answers

Power supply fan is makeing a lot of noise


1) Unplug the power cord and give the fan a good cleaning
with a soft paint brush and a vacuum cleaner.

i.e. Let the fans spin up by the vacuum and than bring
the brush against it.

2) If this fails, it's time to replace the fan:

a) Upgrade or replace the power supply enclosure with more
power/higher quality.

This is usually a good investment anyway.

b) Replace the fan only as described below:


Unplug the power cord

Open up the computer (remove sides)

Unplug all the power supply harnesses from
the mother board, drives and chassis fans.

Unscrew and remove the complete power supply
enclosure at back of computer (ie top of the tower)

Vacuum it out as much as possible.

Disassemble the power supply enclosure by removing
more screws and removing the metal cover.

Unplug the fan from the circuit board, remove it
and take it to a computer store/ builder.

buy another fan just like it

reverse the process to put your computer back together.

1) A new power supply should cost $65 to $120
depending on power and quality. The bigger the better.

But make sure it fits mechanically into the existing chassis
and that the AT generation matches ***********-board.

2) A new fan should cost $15 to $25. Makes sure it runs on
the same voltage, and that it is physically compatible.

Martin

Apr 24, 2008 | Computers & Internet

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