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Not enough power on cpu

Dell presicion 340 cpu is fine but i think its not geting enough power it might be a mother board problem or pwr supply need to know how much power a p4 2ghz procesor houul use

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Sir,
You can contact this number for *********** board problem.
800-404-2284 / 916-377-7000

Posted on Jul 03, 2009

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1 Answer

Dell dimension 4600c won't turn on since we had a power outage


hi

if you CPU has a green light it meance your Power supplay is working fine chack back side of your CPU fan is working or not if it's working then just open case
folow the 2 step

1 remove RAM
2 CIMOS beetery which is on mother board leave your CPU for Some thime re fix both i hope you CPU will give you the disply

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System wont turn on and there is a solid green light at the top of the mother board of my gateway 310 pc replaced batt on motherboard and it still wont turn on.


hello, this be caused by several things , i am assuming your are okay with opening up a PC since you have already changed the onboard battery.

here are few things you can try to further troubleshoot:
1: though the ligh on motherboard is on, power supply can still be faulty, so lets test that with a paper clip trick,
follow this link there are pictures and very clear instructions: http://www.ehow.com/how_4732521_test-desktop-power-supply.html
if power supply is bad, well then you know what to do... change it.
if the power supply is good:
2: remove all the RAM (memory) chips from motherboard and plug the power cable back in and observe the response (you may or maynot hear THREE beeps) now plug in memory chip and try powering up and try with one chip at a time...if PC boots up with any of the chips in it you knkow you have a faulty memory.
if that didn't work:
3: with everthing put back together try disconnecting just the hard drive and power it to see if you see BIOS screen.
if not:
4: many time this worked for me with Gateway PCs, reseating CPU in its slot but only do it you feel confident doing it because you can end up with a GIANT door stop if any of the pins on the CPU are/is damaged.
you would need some thermal-paste to go back on between CPU and heatsink.
if that didn't work..i think you are up to buying new PC.

let me know if you need more help or not clear about anything...
good luck

Amar Sondhi

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1 Answer

I had two bad PC's One would not power up. Thought power supply. Took out identical power supply from the other bad PC. Still would not power up. I fiqured bad mother board. Put the power supply back into...


Ensure the power supply at the wall is good, ensure all plugs of power supply are plugged into Mobo, especially the CPU pwr supply if it has one. You really need to know 100% if the power supply you are using is good. If so and absolutely no boot. HDD activity then I would first suspect ram then CPU then mobo. Simply remove / replace ram, sometimes fixes them.

Nov 30, 2009 | Dell Dimension 2400 PC Desktop

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hi,
Issue seems with the power IC of the motherboard need to repair.

May 29, 2009 | E-Machines T1860 PC Desktop

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Pwr/slp/msg led not glow but the hdd led is always on


hi im josh in cebu phils. may i help you? not open or no boot. If it doesn't boot or power on and no prsence of current on your pc. The main problem is motherboard. it may be no current is running on the board.because the supply chord was lost or not enough supply to make the motherboard execute.check if your power cable 16 pins is connected and the 4 pins 12 volts power support.if it loosen thats the problem. Sometimes the compatibility of your processor and the mainboard is needed.if both of these is for the first time check the compatibility of the mainboard and the processor in your support manual. good luck!

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sounds to me like your mainboard is bad, i bet if you closely inspect the capacitors around the cpu one or more is bulged out or leaking

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Two sets of power leads to motherboard from pwr pk, 1 x 20 pin and a 4 pin, when the 4 pin isn't attached to the 8s651mp-rz motherboard the fans spin, the mother board light comes on, but then does...


The 4 pin connector is required as it provides the power for the CPU to run. if nothing is happening with the 4 pin connector plugged in then there is a problem. You need to make sure that you Power Supply can supply enough power for what you are connecting to it (400W would be the bare minimum with no high end video card, 500W would be recommended). You also need to make sure that the Power Supply is connected properly because some Power Supplies from pre-built systems from companies like Dell are wired differently than the standard power supplies. The only other likely problem is that there is a short on the motherboard either from the mounting of the motherboard in the case or from something on the motherboard being bad. Make sure there is no metal touching the motherboard except at the holes used for mounting.

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1 Answer

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You wil have to give me more details please

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Your mohterboard seems to be bad! If you have replaced the power supply and placed all connections in the rightful place, with no result! Your Motherboard is definetly bad!

Nov 29, 2007 | Dell Dimension 4600 PC Desktop

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