Question about Biostar : I945P-A7 LGA775/945P/DDR2/SATA/IEEE Motherboard (MOTBI23)

1 Answer

Trying to put a mother board together need help

The power supply connection on the board has more pins than what is on the power suppy connection how do I connect this?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers
Re: trying to put a mother board together need help

Hi LadyT18,

Apparently your power supply is an ATX 20-pin type (v1.x) and is the standard a year or 2 back. Your motherboard being fairly recent uses the new standard which is ATX1 24-pin type (v2.x).

Your options are:
1. Replace your power supply with a higher wattage/XX pin;
2. You may still use the old 20-pin power supply provided that it is rated 300 watts or higher. Additionally, please bear in mind that using a 20-pin PSU to an ATX1 (24pin) may cause boot failure and/or instability during operation due to insufficient power delivery.

I scanned part of a motherboard's manual to illustrate how this could be done. Below is the image for your reference.


Hope this be of some help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Posted on Nov 13, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

3 Answers

Power supply was removed and don't no where to put wires/acer aspire

cable has 20 or 24 pin group it will only go in one way

Apr 16, 2014 | Intel Motherboard

1 Answer

The motherboard comes on when the power suppy is switched on. even with no ram or hard disk it turns on and gives no beeps.

this issue is a possible mother board going bad or a power supply switch that is "open and needs replacement. I tend to go towards the latter. Replace the power supply.

Apr 22, 2010 | Biostar NF325-A7 Motherboard

1 Answer

When I attempt to turn on my computer after playing with the switch front and back it will start sometimes and run for a few minutes and then shut down. When I remove the four pin connector to the mother...

I've seen this before but the 4 pin connector was burnt pretty bad and not making a good connection. I'd see if you could gently scrape the pins a little bit with a small knife(motherboard) See if the connector from the power supply looks ok and doesn't look like it's gotten hot. The holes in the center of the 4 wire connector can be a little bit larger than the pins themselves also. You might try plugging in the connector and then holding some side pressure on the connector while you try to start the computer. Also unplug the hard drive and cdrom while you try booting. The power supply may not be putting out enough amperage and unplugging drives may give it a little more power. That would mean you might need another power supply if it works.

Nov 29, 2009 | MSI 865PE Neo2-V Motherboard

2 Answers

Power suppy fried, now new power supply will not power up

a 450 watt power supply will have the extra pins your talking about if this is a newer pc if not you will have to buy older used one on ebay or something to get what you need

Nov 10, 2009 | MSI K8T Neo-FSR Motherboard

2 Answers



I want you to try first swap the power supply box  of the PC if no change ?
go to the CPU socket remove the CPU check if any component is burnt that area if ok put a new CPU  then on it . 
If still behaving the same ,then the mother board is bad get a new mother board

Good luck  

Oct 01, 2009 | Foxconn P9657AA-8EKRS2H (6938279104065)...

2 Answers

No pwer

check conections, did you isolated bolts while you ware inserting mother board? check condensators on mother board if there are some leeks... if this is the case ,,, buy a new mother board? is mother board new?

May 02, 2009 | Asrock K7S41GX Motherboard

1 Answer

4to8pin atx

You don't need an adapter from 4 to 6 pin, the mother board needs a 4 pin atx connector.

You can download the complete manual from here:

And you can see the pins layout.

Let me know if you need more help

Sep 29, 2008 | EliteGroup GeForce 6100SM-M Motherboard

1 Answer

Problem with ASRock P4i45GV

THANHTHHP, memory is very important to start computer.Some cpu's need a minnimum [a pair] 2 memory sticks
Do not plug the power supply ONTO the mother board. Do plug the a/c power cord in back of the power box, turn it on.Does the fan turn on [spin] and u feel air coming out? If fan is on, that is good. If fan is NOT on, that is not too bad because some power supply NEED to connected to the mother board for it to have a path.The power supply can SHOT DOWN if connected wrong or there is a short on or in the mother board. Look to see if ANY piece of metal, one of your screws fell in between metal contacts.,Did u put the computer together yourself? Look to see that the contacts [under the board] are NOT shorting where the screws that hold the mother board down to the chassie body

Apr 25, 2008 | Motherboards

1 Answer

Ms9317e does not boot

you better go to last resource directly:

1. disassemble the system completely and take the mother out the case... Give it a perfect cleaning.
2. place the mother over a wood table or something like that (mother without anything but the cpu).
NOTE: if you are running onboardvideo do not connect external video board... if you are using external videoboard and do not have onboard video, you might have problems on the board... so you could need another one).
3. just connect RAM and power supply (the power supply must be out of case, placed over the table too and well connected to mother and to power line.
4. power on the system by jumping the pins on the motherboard... you can find them under the identification front pannel or something like that deppending on the model... just the pins that normally you attach to the cables that leads to the buttons on the front of the case. (use a screwdriver and do not touch anything on the motherboard with your hand if its connected to powerline).

then, and after trying vga adapter if you have one and trying rams one by one in different socks... you will know that if the system never boots up, you have hardware problems, either on mother, ram and less probably, power supply or very rarely cpu...

g luck, in this cases... better go live chat...

Mar 21, 2008 | Matsonic MS9317E Motherboard

1 Answer


do u have pw switch on right pins power p start with red on that oen go over one to conect the black try both ways never up down on pins tho side to side only ok

Jan 25, 2008 | Intel Desktop Board D845WN Motherboard

Not finding what you are looking for?
Biostar : I945P-A7 LGA775/945P/DDR2/SATA/IEEE Motherboard (MOTBI23) Logo

Related Topics:

783 people viewed this question

Ask a Question

Usually answered in minutes!

Top Biostar Motherboards Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers


Level 2 Expert

69 Answers

Mark Taylor
Mark Taylor

Level 3 Expert

728 Answers

Are you a Biostar Motherboard Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides