Question about Intel 845GE Motherboard

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Replacement hello i have p3 and i want to replace it by p4 with same cabinet and power supply and all components. can i?

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You should be able to use the same HDD, Floppy drive & CDrom drives, You should be able to use the case, if it has a removable plate for the outputs as they will most certainly differ from your original mobo. However you need to check your PSU as the P4 has a requirement for a 4pin 12 volt line which is not present on the older PSUs, however you can get a new PSU and fit it into your case for about £30-£40 Your P4 motherboard is also unlikely to use the same RAM as your P3 so that will need to be replaced. (as it will be incompatible with the new processor)

Posted on Oct 08, 2007


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Posted on Jan 02, 2017


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I have nothing to plug p3 and p4 into when all on no signal

Sometimes if a VGA cable is not screwed into to both your Tower and your Monitor, it can get loose and thus resulting in no signal.
Another cause of a Monitor Displaying the no signal message would be due to the Graphic Card failing, or possibly due to the Graphic Card not correctly being seated.

Other Thoughts
Usually P3 and P4 refers to a cable on your power supply that needs to be attach to your motherboard to supply extra power.

If your P4 cable is not plugged in before turning on your computer, this will also result in your Monitor displaying the no signal message.
Keep in mind though, if your computer has not been opened or is not a custom built PC, you should not have to worry about such issues as your P4 cable should in theory be connected. However I guess safely checking won't hurt anyone.

Mar 30, 2015 | Computers & Internet


How to use a P3 power supply with a P4 or newer motherboard.

Well its fairly simple, You need the following cable to convert your P3 power supply into P4 power supply.



The pictures pretty much explain every thing, this is the only plug that is not present on a P3 power supply. You can make this cable your self by salvaging connectors from non-working power supplies and other computer peripherals. The connections are straight forward just connect both the yellow wires to the single yellow wire and the black wires to the black wires and your done.

on Feb 09, 2010 | Computers & Internet

1 Answer

I getting loud annoying sounds from my CODEGEN ATX2 switching power supply I think its the fan should i replace the power supply and is it affordable to have it done?

Yes you should replace the power supply and you can do it yourself go to the back of the tower and at the top you will be able to see the power supply it is held in with 3 to 4 screws open the side panel and unplug all the wires that go from the power supply to the different components of the computer
then unscrew the power supply from the back of the tower and lift it out you will need to get a ATX
P4 power supply you can get the best price at new Egg ,or Amazon .com the prices very in price from 30.00 to a Hundred or more

Sep 01, 2011 | AMD Codegen 350W ATX P4 Recommended...

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My computer did not start when i tryied to turn it on, so i pushed the red butten to the side at my power suply and tryied again ther was a loud bang from the powersuply and ther was smoke comming out from...

The only thing to do at this point is to replace the Power Supply with a KNOWN to be good, compatible unit, and see if the rest of the computer hardware components are okay.

Going by your information stated that the Power Supply is an Enhance ENP-2224B SMPS, (Switched-Mode Power Supply), it is a special shape.

If it wasn't for the Slim Micro-ATX computer case you have, you could use an easy to obtain ATX form factor Power Supply.

From a quick search though it looks like a replacement unit is affordable,

There is simply no way to tell if the motherboard, and/or Processor, and/or Ram Memory, and/or Harddrive, etc., is okay without having power.
Unless you transfer the components on the motherboard to another working motherboard.

If your Power Supply has a rocker switch on the back that lets you use 120 volts, or 220 volts, make SURE it is set to the right voltage.

120 Volts
220 Volts
220 Volts
100 Volts ]

For additional questions please post in a Comment.

Jun 26, 2011 | Enhance Technology ENP-2224B, Enhance 240W...

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This is the THIRD power supply to fail in 9 months. How do I send it in for Mfg Warranty replacement?

Take it back to the retail store, and get them to do the warranty-replacement.

Or, use the telephone-number and/or web-site information printed on the label of the power-supply, to contact the manufacturer.

Nov 17, 2009 | Tiger Pro TP360 360W Power Supply ATX...

1 Answer

Hello.problem is.were are se place of cable p3,p4,p5,p6 on se pc acer e500?

they are usually number given to the power cord in the computer with power supply..

Jun 28, 2009 | Computers & Internet

3 Answers

Motherboard power problem due to atx 12v cable

I tried different power supply but its still not powering up. But when i remove the 4 pin 12V cable from power supply the cpu fan is rolling, it means that the power supply is working but when i tried to connect the 4 pin then the cpu fan stop just a second and never rolled on. The main problem is the 4 pin, the model is Asus P5P800-VM. I tried to reset the cmos and replaced the battery but it wont work out. Please help me!!!

Jun 09, 2009 | ASUS P5P800-VM Motherboard

1 Answer

What is the polarity of a Alesis P3 Power Supply Barrel ?

The P3 is an AC supply; so there isn't the question of polarity. Connect it either way.

Dec 14, 2008 | Alesis P3 Power Supply Barrel...

2 Answers

Changing a P3 motherboard for a P4 motherboard

P-4 boards want at least a 300w power supply, P3 were not so picky. Next, swapping boards is easy but remember to stay in the same form factor, (the relative size length and width) a server board won't fit in a micro case.

The location of the stand offs (where the screw holes are) may have to be changed. P4 boards have 20 pin or 24 pin power connectors so the appropriate power supply will need to be ordered. If you are running a lot of peripherals a 450w ps at least.

Now you decide if you want a board with on board, video,nic,sound,etc.

then you have to order the supported processor/heatsink and fan/thermal grease/supported Ram etc.

I've been doing this for years so i probably left out a lot.

Lately because of costs I've resorted to backward building.
I decided since DDR2 is cheap, find a board that supports that ram in a processor socket I want to use (socket 478-775) etc.

Mar 21, 2008 | Intel Motherboard

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