Question about EliteGroup K7VMM Motherboard

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Comp not firing up

I installed all my old parts into a new case for my sister, an the computer dosen't fire up, the processor fan spins for about a second but the PSU dosen't, its a new case which came with the PSU but could this be a problem with the PSU?, i have nothing else plugged in apart from the power to the motherboard

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  • mythical_72 Jun 18, 2008

    ty for you help, it seemed to fix the prob, but then another one came, when i tried it in the case :S

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Something may be shorting out the board. Try taking the motherboard out and turning it on without the case. Just put the motherboard and power supply on a non-static surface. A box works well. Then use a flathead screw driver to temporary "jump" the 2 power switch pins for the front panel connection (as you wont be turning it on while inside the case).

If that doesnt work, then replace power supply. You could also take one out of another working computer just to test.

Posted on Jun 18, 2008

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Dual core 2.8ghz processor not supported for intel 946gzis motherboard can u give me the suggestion ?


1) FOLLOW Anti-Static Precautions.

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit), the delicate hardware components of a computer.
Relieve your body of Static BEFORE working on your computer.

Computer on a table, computer Unplugged from power, computer case open;
TOUCH an unpainted surface of the metal frame of the open computer case.
This action will relieve your body of Static.

IF you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.

A Processor is the MOST susceptible hardware component to Static Shock.

2) Clean the top of the Processor, and bottom of the Heatsink THOROUGHLY.

Start with a plastic scraping device, (Old credit card?), and scrape off as much of the old Thermal Paste as you can.

If there is a Thermal Pad, carefully peel it off, throw it away. CANNOT be reused.
Scrape with the plastic scraper.

Follow with Q-tips dipped in Isopropyl Alcohol. (Rubbing alcohol)
91 percent is best, but 70 will do.
May take a LOT of alcohol dipped Q-tips as it's usually a gooey mess.
MUST be clean enough when you are done, that you could literally eat off of it.

CAUTION!!
Isopropyl Alcohol is EXTREMELY FLAMMABLE!
Use in a WELL ventilated area with NO sparks or flames present.

Thermal paste has to be PROPERLY applied.
NOTE about thermal paste that contains real silver.
(One example Artic Silver 5 )

Silver is an excellent conductor of heat. Will transfer the heat from the Processor to Heatsink very well.
Silver is also an excellent conductor of Electricity.

IF you apply too much it will ooze off of the Processor, once the Processor reaches operating temperature.
Will ooze onto the pins of the processor, or pins of the processor socket.
Will ooze down on solder joints.
Result is Short Circuit.

(If this has transpired, follow Anti-Static Precautions, remove Heatsink, and Processor, use alcohol dipped Q-tips to remove all thermal paste, start over. Sometimes you can get to it in time, and nothing is permanently damaged )

It is really best to install the Processor with the motherboard removed.
Reasoning is that you can hold the motherboard flat, up to your eyes, and look across it.
See if the Heatsink is sitting perfectly flat, or there is a crack of daylight showing in-between the Processor, and Heatsink

Heatsink on Processor MUST be sitting flat.

3) Watch power cable to Processor fan. I have had a few where one of the pin connections in the power cable's connector, pushed out a little.
Doing so meant the wire to that pin, was NOT plugged all the way in.
The pin in the power cable, did not plug all the way into the 'connector tube', of the Processor fan cable's connector.

('Connector tube' = Molex metal female terminal,

http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081202_CRIMP_TERMINALS.xml&channel=Products&Lang=en-US )

This means the Processor fan will run intermittently, or not at all.
Result is overheating of the Processor.

4) Make sure the Processor fan wires are plugged into the motherboard.
Computer case open, computer turned on, watch the Processor fan. Make sure it is spinning, and seems to be spinning at the correct RPM's. (Revolutions Per Minute)

For additional questions please post in a Comment.

Regards,
joecoolvette

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1 Answer

Motherboard won't fire up processor fan starts then stops. new power supply, new CPU. No change. Home built computer. Stripped memory, circuit boards,drives except floppy. Reset cmos. No change.


even though its new could still be bad processor, power supply, or the motherboard its self.try to jump it without the power connected. should be pin 4 and 6. double check that though in your manual.jump it with a wire but dont touch any other pins or you will fry the MB.

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No thermal grease or old dry thermal grease and a dust and debris filled heatsink is your most likely cause of this problem. Dell isn't very overclocker friendly...it is more likely a lack of maintenance in blowing the dust out of the case on a regular basis. Take the case panels off and use dry compressed air to blow the system out and clean it thoroughly. The heatsink needs to be removed and the hold down latch on the processor needs to be removed and the heatsink and processor need to be wiped clean and a new thin layer of thermal grease applied to the processor. Put the system back together and fire it up.

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Is the PC Beeping at the end of the POST ( power on self test)
It should beep just before the bios screen appears(this is the screen which lists all the installed cards etc in the system along with the hard drives and the various other parameters) if not, it is not completeing or even starting the POST.
You may have a critical error so make sure ALL cards and RAM chips are fully and correctly installed.( touch a bare metal part of the chassis BEFORE touching anything inside the case)
If you still have probs, did you touch a part of the bare metal chassis BEFORE you touched anything else?
You may have spiked the board with static discharge.

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1 Answer

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I have encountered that kind of problem before in the AMD processor. When your turn on the switch the fan is spins and then suddenly stop. The processor is shorted or there is defective parts you need to return it to the supplier. But can you check first if the motherboard and the processor is match . Maybe the motherboard cannot carry the speed of the processor it's better to ask to the supplier or ask them to test both the processor and motherboard .

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1 Answer

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Hi, in my workshop I have struck similar problems and have almost always found it to be the RAM that is at fault, try a completely diferent RAM stick and see what happens. Regards mistyman

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