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No monitor, black with "video cable connected?"

I have removed all the hardware, harddrives, cd/dvd players, floppy drive, changed out the power pack (known good), swapped out the monitors between this PC and a new PC ( old monitor works on new PC, new monitor does not work on old PC-message remains, swapped out the memory (known good), replaced the BIOS battery, all fans are working, the LED's on the front alternate back and forth between green and amber, the LED's on the two cd players alternate back and forth between green and amber, the power swith will not power off the PC (HP 8756c), what else is there? Motherboard? If the motherboard is suspect, is there anyway to test it? Thanks.

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If you have swapped all other devices then yes it is probably MB, and yes there are ways to test it but i would just swap out the MB and see if it works.

Posted on Jun 22, 2009


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1 Answer

My acer pc is not booting properly

there maybe faulty installed hardware on your PC. remove those hardware like sound & video card (if any), PCI modem, CD/DVD ROM, etc. turn on your PC without those hardware & if/ there's nothings change? means that there is no wrong with your PC's hardware. turn the PC off, re insert IDE & power supplies cable of your hard disk drive to make it sure that the HDD is properly connected & being detect by the system. remove the memory card and clean or wipe the connector surface of the RAM with tissue paper. (change new memory card if needed). check the mother board C-MOS 3 volts battery if it is volts sufficiently .turn your desktop on & wait for good results.( Reformatting your OS is also recommended.)GOOD LUCK!

Jul 09, 2014 | Acer X193W LCD Monitor

1 Answer

How does P4 Connector connect to the CD Rom Drive

Hmmm, P4 is usually a designation, for a 4-pin ATX +12 Volt power cable,

I see though that they have P2 as the 4-pin ATX +12 Volt power cable, and P4 as a SMALL 4-pin Peripheral power cable,

This type of power cable is used on a Floppy Drive, or a Card Reader.
Not a Harddrive, or Optical Drive. (CD/DVD drive)

The Standard 4-pin Peripheral power cable, is used on an IDE (PATA) harddrive, or optical drive,

Rounder corners on the Top of the plug connector.
Only plugs in, in one direction.

Owner's Manual > Page 109 -
Power Supply DC Connector Pin Assignments

P1 = 24-pin ATX main power cable,

P2 shown above - 4-pin ATX +12 Volt power cable

P3, P5, and P6 are SATA power cables,

If you have a SATA optical drive (CD/DVD drive), the above is the power cable used.

Uses a SATA data cable,

SATA data cable connector on motherboard, is shown below the SATA data cable.

Color does NOT matter

For additional questions please post in a Comment.


Nov 09, 2012 | Dell Inspiron 531s Desktop Computer

1 Answer

How to Replace the DVD RW on my PC /HP Pavillion a6130n /


There is Me

HP Support > Pavilion a6130n Desktop PC > Main Support page,

How to > Adding / Replacing hardware > Opening the PC Case,

Back page; Adding / Replacing hardware > Removing the Front Cover,

Back page; Adding / Replacing hardware > Adding or Replacing a CD or DVD Drive,

This is an example of a SATA data cable,

Note the L-shape inside the cable's connector.

It also shows a SATA connector for the motherboard.
Note the L-shape on the connector. The optical drive (CD/DVD drive) also has this L-shape on it's connector.

(SATA connectors on the motherboard come in various colors. Color signifies what SATA connector it may be. SATA0, or SATA1, or SATA2, etc.)

Between a SATA data cable's connector, and a SATA power cable's connector, the SATA power cable connector is the larger of the two.

SATA data cable connector has 7-pins. (Contact pins)
SATA power cable has 15-pins. (Contact pins)

Example of a SATA power cable,

A SATA data cable connector, and a SATA power cable connector, may have a small 'bump' on them, that you depress with your thumb, when installing the cable, or removing. The 'bump' is a Lock.

Usually the cable end going to a harddrive, or an optical drive; will be a 90 degree Elbow.
The straight end connector plugs into the motherboard.

A Top View look at the motherboard in your computer,

HP Support main page > Product information > Product specifications > Motherboard specifications, MCP61PM-HM (Nettle2),

View shown has NO hardware on the motherboard.
(Processor, Ram Memory, etc)

The long Blue, and Black slots, with the White Lock 'ears', are Ram Memory slots.

The SATA connectors on the motherboard, are to the bottom/right corner, of the Number 3 and Number 4 ram memory slots. (Blue)

Yellow, Blue, White, and Black.

Scroll down, and click on the + sign to the left of the blue -
Motherboard layout

Using this illustration you can see;

Yellow SATA connector is SATA4 <-
Blue SATA connector is SATA3
White SATA connector is SATA2
Black SATA connector is SATA1

Due to standards set by JEDEC, and generally followed by all; the harddrive is plugged into SATA1.

HOWEVER, you can plug your optical drive, or drives, or harddrive, or harddrives; into ANY SATA connector on the motherboard that you want to.

The beauty of SATA is that BIOS will find the drive, NO matter what SATA connector on the motherboard you plug into.
Harddrive, or optical drive.

For clarification on anything I have stated above, or for additional questions; please post in a Comment.


Nov 05, 2012 | HP Computers & Internet

1 Answer

D945gtp how to connect cd-rom hardware

1) IDE {PATA} DVD burner drive:

For an IDE { PATA } DVD burner, connect to the 40-pin IDE header on the motherboard. This is located to the right side of the Ram Memory slots.
It is the longer header that has 40 contact pins. {39 actually}

( The shorter connector on the motherboard is for a Floppy Drive.
{34 pins} It is above the IDE 40-pin connector )

The IDE connector on the motherboard should be keyed. Should have a cutout on one side. This is so the Number 1 pin in the flat IDE ribbon cable, will line up with Number 1 pin in the motherboard connector.

Some flat IDE ribbon cables, do not have a Locating Lug on the connector. (Small rectangular 'bump')

Number 1 pin on the IDE ribbon cable will be on the side that has a faint RED stripe on it.

Number 1 pin in the motherboard connector is at the Bottom, with the motherboard installed.

The side of the flat ribbon IDE cable that has the faint red stripe on it, goes DOWN, when installed in the motherboard connector.

If the DVD drive does not have a cutout for it's circuit board, the faint red stripe of the flat ribbon IDE cable, goes towards the power cable connection.

2) SATA DVD burner drive:
You have 4 Serial ATA headers (Connectors) on the motherboard.
Your SATA harddrive should be plugged into the SATA1 header.

You can choose any open available SATA header, to plug your SATA DVD burner drive into.
BIOS will see it once you turn the computer on.

3) If you somehow have been using an IDE {PATA} harddrive, and have it connected to your IDE connector on the motherboard, you SHOULD not use a DVD drive on that flat IDE ribbon cable, also.

BIOS has to find which device has the Operating System on it, (Windows), and then hand the computer over to the Operating System.

To state again, BIOS will look at both devices connected to that flat ribbon cable. The Harddrive, and the DVD drive.
It will then determine that the Harddrive, is the device that has Windows on it, not the DVD drive.

This slows the computer down, and could result in a blue screen.

If you have an IDE harddrive plugged into the motherboard, it would be best to use a SATA DVD drive.

For additional questions please post in a Comment.

May 28, 2012 | Intel D945GTP Motherboard

1 Answer

My monitor will turn on for a brief second then turn black

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have secure dust free connections and are not faulty or just replace them they might be faulty

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electical extensions

even something as small as an electrical fan and its lead can cause you problems or just replace them they could be faulty a computer needs all electrical power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error

make sure your graphics card is securely seated with no dust built up or in the socket

if you remove your graphics check the socket to make sure its dust free

restart your computer then reinstall it this should activate found new hardware wizard
hope this helps you

Dec 18, 2011 | Gateway HD1900 19" Monitor

1 Answer


No product support question is stupid, Peter.

1) An IDE cable should be plugged in with the Number 1 socket hole in the IDE cable's connector, going on the Number 1 pin on the harddrive.

Number 1 pin on an IDE optical drive, or harddrive, is next to the 4-pin power connection.

Illustration which shows the back of an IDE (PATA) harddrive.

See the area marked as IDE Connector?
Two rows of pins.

Next over are the Jumper pins in the Jumper Block.

Finally, next to the Jumper Block is the 4-pin power connection.

To make sure the IDE flat ribbon cable, is inserted into the harddrive in the correct position, a Locating Lug is usually on the IDE flat ribbon cable's connector.

A small rectangle, or two bumps side by side, on the top edge of the connector.

This Locating Lug lines up with a cutout, in the circuit board of the harddrive.
A Locating Notch.

Sometimes there isn't a Locating Lug.
In this case look at the side edge of the IDE cable for the faint Red stripe.
This red stripe is on the same side as Number 1 pin.

So when you go to plug the IDE cable in, make sure the Red stripe is facing the 4-pin power connection.

Goes for an optical drive (CD/DVD drive), or a Harddrive.

(On the motherboard there are usually two IDE headers. {Connectors}

One for the Primary IDE device, a Harddrive, and one for the Secondary IDE device.
Usually an optical drive.

Next to the Primary IDE connector on the motherboard may be PRI, or Pri, or Primary, or IDE 1.
{ In TINY letter/numbers }

Next to the Secondary IDE connector on the motherboard, may be SEC, or Sec, or Secondary, or IDE 2.

Sometimes only the Secondary connector is marked. This tells you the other connector is the Primary connector.

Number 1 pin is towards the marking. Primary, or Secondary.
The Red stripe goes towards the marking on the motherboard )

There are two rows of pins on the back of the Harddrive for the IDE cable.
With a cursory glance it may look as though there are two rows of 20 pins.
There is not.

One pin has been removed. One row only has 19 pins.
Generally, but NOT always, the matching socket hole in the IDE cable's connector, is blocked off with a plug.

An IDE cable only uses 39 socket holes even if there are 40 shown.

Also; NOT a good idea to put a Harddrive, and an Optical Drive, on the same IDE cable.

BIOS looks to see which drive has the Master Boot Record.
Windows master boot record.
This is on the Harddrive.

BIOS will look at both, the Harddrive, and the Optical Drive.
This slows the computer down, for one.
For two, BIOS may not find which drive has the master boot record, with both drives on the same IDE flat ribbon cable.

Harddrive goes to the Primary IDE cable.
Optical drive/s go to the Secondary IDE cable.

2) As for the power cable it is a 4-pin standard Peripheral power cable.
Often misnomered as a 'Molex' cable.

[Molex was the model name given by the first company to produce this connector.
It stuck.
Kind of like referring to an open-end wrench as a Crescent wrench ]

It is also a STANDARD 4-pin Peripheral power cable, because there two 4-pin Peripheral power cables.

4-pin Standard Peripheral power cable,

Note in the center photo the shape of the connector.
The top two corners are rounded.
Only plugs in, in one direction.

{The Yellow wire is a 12 Volt wire.
Red = 5 Volts
Black wires are Ground wires }

4-pin Small Peripheral power cable,

Older computers used this power cable for a Floppy Drive.
Newer computers use it for a Card Reader.

For additional questions please post in a Comment.


Oct 01, 2011 | Computers & Internet

1 Answer

Need to replace cd-rom drive, how difficult? dell dimension 3000 pc desktop

It is not difficult to change cd/dvd drive.
Open cpu cabinet.
Then remove icd cable and power cable from cd/dvd drive.
Then remove screws of old cd/dvd drive.
Then you can pull it from cabinet from front side.
Then put your new cd/dvd drive into it's position then lock it with screws.
Then connect ide cable from motherboard and power cable to drive.
Then you can use it.
If you connect to drive with 1 ide cable means if you connect harddrive and cd/dvd drive with 1 cable then set harddrive as master and cd/dvd rom as slave you can set it slave with jumper settings.
It is in back side of cd/dvd drive.
There is instruction how to slave it with jumper.
Let me know if you need further assistance.
Thanks for using FixYa.

Mar 17, 2010 | Dell Dimension 3000 PC Desktop

1 Answer

How to remove ibm thinkcentre p4 3.0 motherboard

This is the link to the IBM ThinkCentre S50-8183, Hardware and Maintenance Manual,

On this page scroll down to the heading -
Publication type: Publications,

and left-click on the blue - 74p2660.pdf

This is a PDF file download. May take up to 25 seconds before you see the first page, and additional time to full download it.

Suggest you let it download all the way before looking through it.
Otherwise you may break the download connection.

(The file should also be downloaded all the way, before saving it to your computer.

If you do not know how to save this PDF file to your computer, and would like to know how, please come back and state so in a Comment)

If you cannot download the Hardware and Maintenance Manual, please come back, and state so in a Comment.
(I had to try to download twice, as the connection dropped on me. Second time was a charm)

The following is from me:
1) Computer off, unplug the power to the computer.

2) BEFORE you reach inside the open computer case, TOUCH the metal frame of the computer case, to relieve Static electricity from your body.

Static will fry out (Short Circuit) the delicate hardware components inside your computer.
(Even if this problem should relate to replacing a bad motherboard, you don't want to fry out the other hardware components. Processor, Ram Memory, Harddrive, and so on)

Should you get up, and walk away in the middle of working on your computer, when you come back touch the metal frame again.

Basic tips from me:
A) Opening the computer case.

Facing the front of the computer, there are two Cover Release Buttons. One on each side of the computer case, towards the front.

Press these release buttons in at the same time, rotate the cover up, and back.

The computer case is a 2 part type of case. The top opens like a clamshell, and is hinged on the back.
Should the cover not rotate it may be locked.
See if a lock is present on the back of the cover. If so remove it.

B) Looking at the inside of the Front of your computer, you'll note that the CD Drive, Floppy Drive, and Harddrive, are located inside a rectangular metal framework.

(Floppy Drive on the left, CD Drive on the right, Harddrive under the CD Drive)

This rectangular metal frame is the Drive Bay, and is hinged on the very front side of the computer case.
If you grab the side that is towards the middle, you can lift it up, and tilt it towards the Front.

The cables that you see coming from the motherboard to the CD/DVD Drive, Floppy Drive, and Harddrive, Do Not have to be disconnected from the drives.

THIS is in reference to the flat ribbon IDE cables, or round SATA cables.
These are Interface cables. Also known as a Signal cable.

( NOTE* IDE is also referred to as PATA. The term PATA was implemented to avoid confusion.

PATA is Parallel ATA
SATA is Serial ATA )

You can leave them connected to the drives themselves, just tie them up out of the way with a zip tie, or bread wrappers, and flop them to the outside of the computer case.

You Do have to remove the power cables to these three drives, to remove the motherboard.
They come from the Power Supply, and crossover the motherboard.

(Looking at the Hardware and Maintenance Manual, for the IBM ThinkCentre S50 series of Desktop PC's,
I see there are IDE and SATA connectors on the motherboard.

This means to me that you could have an IDE or a SATA harddrive. You MAY also have either an IDE or SATA optical drive. {CD/DVD Drive)

To avoid possible confusing information, I won't detail out how to remove both an IDE and SATA interface cable.
I'll let the Hardware and Maintenance Manual explain this.

IF, you are unable to download the manual, or if you need more detailed information than the manual provides, I will gladly give it.

We may have to post back, and forth, for the info you need. Just post your additional questions in a Comment)

BEFORE you disconnect any interface cable, that comes from the drives to the motherboard, I suggest you make drawings, and notes.

The Hardware and Maintenance Manual shows, and details information pretty well, but will never be as concise as any notes, or drawings you may additionally make.

Note which direction Each cable connector, plugs into the motherboard's connector, and where they go. Reference this in a drawing, and make a note.

Note where the power cables plug into the motherboard, and which power cables go where.

You'll also have to remove the Power Supply, in order to remove the motherboard.

There are two Fan connectors on the motherboard. It doesn't state if the Processor has a Fan, and doesn't look like it does. One of the Fan connectors, is to the computer case fan in the Front.

Observe, and make a note of which way the Front Panel cable connector plugs into the motherboard.
This may be critical.

The connector, (Header), on the motherboard may not have a locking device on it.

If it does, so does the Front Panel cable connector, and this automatically tells you how the connectors line up with each other.

Or there may be a Locating Lug, and a Notch.

If you take the computer all the way apart, don't worry I can tell you how to put it back together.

You do need to note which way that Front Panel cable plugs into the motherboard, though, before you remove it.

(The Front Panel, is the plastic piece on the front of your computer, where the Power On button, LED lights, and drive openings are)

Don't forget to plug in the 4-pin ATX power cable from the Power Supply to the motherboard. This is power for a Pentium 4 and above processor.

Looks like this,

(May be Black in color instead of White)

Feb 08, 2010 | IBM ThinkCentre S50 8183 - P4 3 GHz...

1 Answer

No Beep Code, No Post, No Video

Hi there. Ok, have you tried connecting it to another monitor, to see if the same thing happens? Though to be honest, I think the same thing will happen.

If the same thing does happen, try following these steps to see if you can isolate the problem:

Change the CMOS/BIOS battery, to see if the current one is faulty. If it works, then you know the original was faulty.

If it still doesn't work:

Disconnect everything, (hard drive, cd drive, floppy drive and the PSU), also disconnect the cables from the motherboard. Take out any PCI or AGP cards you may have. Now take out the RAM.

Ok, now to isolate the problem:

If you are using more than 1 stick of RAM, only put 1 stick back in. If you only have 1 stick, put it back in a different slot. Make sure that it is seated in properly, by checking that the bits of plastic on the side of the slot have snapped back into place and are straight. If they are at an angle, then it's not seated properly.

Connect the PSU to the motherboard.

Now for your VGA. If you have a VGA port on your motherboard, connect the monitor to that port.

Plug in your keyboard, then your power cable. Turn it on, and see if it starts.

If the same thing still happens, then you have a faulty/corrupt BIOS. Unfortunately, that will mean you need a new motherboard. You can test this by using another motherboard, (if you have, or can borrow), in your system with just the hardware connected that I listed above.

If you need anymore help, or need me to clarify anything, just let me know.


Apr 14, 2009 | Computers & Internet

3 Answers

Dell optiplex gx280 won't boot up

you either have the boot priority in the bios off or you have improperly cabled your hard drive . perhaps you set it to boot to cd while installing the operating system and forgot to change the order back.
The floppy drive does not have to be present for the system to boot (if set to "not installed" in bios)
your boot devices are your cd/dvd rom and your harddrive.
Seeing as you've recently replaced the power supply , ime assuming you didnt dismantle the whole computer , just the power leads coming from the power supply, which means you only moved power , not data cables.
This would be the first thing to check -- power to the harddrive and cd rom, the 4 pin connector that sometimes connects to the motherboard and any data cables you might have bumped while changing the power cables. check these things and post here again.

Apr 01, 2009 | Dell OptiPlex GX280 PC Desktop

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