Question about AMD ASUS A7V8X-X MOTHERBOARD ATHLON XP SOCKET A KT400 ATX 3GB DDR 333 (MTH2022AS)

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Only two fans are connected in my custom built Asus pc. There are three, front intake, CPU, rear exhaust. How can I connect rear exhaust fan if there is no connection? HELP!!! Ray.

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You can get a molex (cd-rom type power plug) to fan adapter, if you shop arould new egg or something. they come with a lot of fans, as well.

Posted on Aug 06, 2010

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What makes 511-cpu fan not detected and 512-chassis not detected


Are you seeing this error on a system you built or a pre-built system? If it is a pre-built system, check that the fans are running. Next check where the fans are plugged in, the CPU fan must be connected to the CPU fan connector on your motherboard. The chassis (rear case fan) only needs to be connected to the motherboard if you want the monitoring/PWM (modulated fan speed) option. If your CPU fan is powered directly from the power supply, change this.

If this is a system you built or recently updated the case, check your fan power connections, as above. Next check the fan speed. My ASUS board will give the "CPU fan not detected" error if the CPU fan speed is too slow. A different CPU fan will solve the problem. (I got my fan with the CPU; it works fine.)

I hope this helps. Please add a comment with more information about your system for more assistance.

Cindy Wells

May 12, 2013 | Computers & Internet

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After 5 days of installation of a Corsair GS700 power supply and proper performance, my ASIUS/AMD PC just won't turn on any more. A brief flash of leds and then off again.


Hi

You do not say if the previous power supply failed or not. If the old PSU burned out, it may have damaged the Power Management System or blown some capacitors on the motherboard.

You do not say if this is a custom-built or factory-built PC.

The issues to check are if anything on or around the motherboard was disturbed during installation.

Start by removing the new PSU and removing the 2nd side panel and shaking the pc side to side to see if any loose screws are lurking under the motherboard or rolling free in the case, potentially shorting the solder points under the motherboard.

Are the motherboard screwholes properly aligned with, seated on and screwed to all the correct mounting points on the motherboard? A misaligned mounting point might short the solder points on the underside of the motherboard.

Are all the RAM modules properly seated? Is the graphics card seated properly? Is the CPU fan connected?

Is the CPU properly seated? Remove the heatsink, clean the CPU and heatsink surfaces, reapply heatsink paste and carefully reseat the Heatsink.

Was the case full of dust, dirt and grime when you changed the PSU? Is there a caked layer of dust between the Heatsink and the heatsink fan?

Are all the cooling fans free of dust and grime and connected properly and are they cooling adequately?

Ideally in a gaming system, a fan should draw cool air low into the front of the case, another fan should draw dispersive cool air into the side of the case, a fan or fans should vent hot air out of the rear of the case. The CPU heatsink fan and power supply fans automatically vent hot air from the CPU and the PSU motor.

Any fans missing should be added to improve and optimize cooling efficiency.

Is there any caked dust and grime between the front panel and the metal chassis of the PC, disrupting airflow sucked in by the front cooling fan?

Are all the cables tidily cable-tied to minimise dust traps, hot air pockets (especially near devices that generate heat like the hard drive(s), optical drive(s) and graphics card and to minimize the restriction of air circulation.

Is the graphics card fan free of dust?

Place the PC on its side. Disconnect the PSU and connect it again starting only with the motherboard connection make sure all 24 pins are oriented correctly. If it is a 2 part connector make sure the 2 parts clip together correctly using the printed guide arrows on the side of the connector. Then connect the CPU power connector, the the HDD power connectors, then the graphics card power connector (if it has one).

Remove the small nickel-sized CMOS battery for 2 minutes then reinstall it, to clear the BIOS from the previous crashes.

Recoonect the power cord.

Then test the PC, leaving it open and flat down so you can easily see all parts of the pc.

If all is well, shut down, disconnect the mains power cord and connect the Optical Drive power connector and all the fans and the test the PC again to see if all the fans work and rotate at the correct speed.

If all is well, shut down, unplug, close the pc, reconnect and power up to test again.

Do not place the PC directly on the floor on a carpet with a thick pile as this can obstruct the inflow of cooling air from the floor-level front air intake. Place the pc on some sorm on platform like a plank of wood or cardbord to leave a cler gap for air to flow in

Hope this helps.

Aug 24, 2011 | CORSAIR 700W Gaming Series GS700 Atx High...

1 Answer

Hi, im using a motherboard asus m4a88td-m and i cant control my fan speed(cpu fan and chassis fan) in any way.... i tried the asus motherbord software it doesnt work, i try settings in the bios(cool and...


You may not have the correct type of fan for this to work. Typically, you need a three or four pin fan (you will see three or four wires on the plug) for fan speed control to work correctly. If you only have two wires, your fans do not have speed control functionality.

You can also have another issue. If you do have a three or four ping fan, you may not have it connected to the correct fan headers on the motherboard for it to work correctly, or you may have it connected to an external fan controller.

May 05, 2011 | Computers & Internet

1 Answer

My Asus A7V8X-X AMD Athlon 2500 motherboard was custom built. There are three fans, front,CPU, rear. There are only two motherboard connections, 1 chassis, 1 CPU. rear is disconnected. How can I connect...


If your rear fan has a small 3 pin connector and there are no connections of that type on your motherboard, you will need an adapter to connect it to a four pin molex connector from your power supply. Something like this...

http://order.store.yahoo.net/cgi-bin/wg-order?yhst-39083765508394+4to3

Aug 05, 2010 | AMD ASUS A7V8X-X MOTHERBOARD ATHLON XP...

1 Answer

Asus p5gc-mx/1333 cpu fan error


There are usually three wires on a fan to connect to mother board 1 red "+" positive, 1 black "-" negative and 1 yellow which feed the bios with information about the fan, i.e. how many rpms it is running at. To check the fan you will need to open the pc by taking the side panel off, you should do this when the computer is running or you will not be able to check the fan is working or not, but be carefull not to touch anything inside the case. If the is not spinning check the cable is in the socket properly by turning the computer off first, if it is you will need to replace it, other wise the processor will burn out. If the fan is spinning then the bios is not receiving the infornmation from the fan, therefore you need to shut down the pc and unplug from mains and check the cable(give it a littke wiggle) and make sure it is making a good connection, try blowing any dust of the connectors, power the pc again and if the bios is still giving you the same message you will definatly need a new fan, you can by them from any pc store, take the old one with you to ensure you get the correct size fan.

Jan 25, 2010 | ASUS P5GC-MX/1333 - Motherboard - micro...

2 Answers

Hi the front fan connection has come off on my asus p5vd2-x motherboard and I'm not sure if it should be connected to the cha fan connector or the pwr fan connector? and both those sockets on my...


According to the manual your Motherboard supports two case fans. You can use either of these pins setups. For your motherboard you have three pins with the third pin ( CLOSEST TO THE CPU) controlling the rotation of the fan. For your two pin fan put the black ( ground ) wire of the two wires on the pin FARTHEST from the CPU.
Note: Manual says the fans should be a max of 350 Ma.

For more information see your manual or look here for a on-line manual.

http://www.manualnguide.com/dl/9354/

Good Luck

Jan 07, 2010 | Computers & Internet

1 Answer

Connecting my PSU to my Motherboard


The bare essentials to start a computer are PSU, Motherboard, CPU, RAM and Video.

Its possible the PSU arrived DOA. Though I've only had 2 DOA PSU's in the 15 years I've been building custom computers.

Hope this helps.
Mary

May 21, 2009 | ASUS P5QC Motherboard - Intel P45, Socket...

1 Answer

ASUS P5KPL-AM CPU fan connection.


You should still be able to connect the 3 pin connector of the fan to the 4 pin connector on the mobo, the keying tab is offset so that you cannot connect it to the wrong pins.
If you still don't want, or can't connect it there, simply go on the Bios (press delete after you turn on your computer) and you will find an option to monitor CPU fan speed.
If you need any more help, let me know

Alex
www.CAS411.com

Mar 28, 2009 | Computers & Internet

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