Question about HP Pavilion a450n PC Desktop

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Bad Motherboard The motherboard on my HP a450n died. Is it practical to replace? It was a good computer, with extra memory, video cards, etc. How do I make sure I get one thats compatable? Is it fairly straight forward to remove and replace? Ron

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The motherboard can be a bit tricky if you have no experience.
you will need to spend about $150 on a new board and may have to replace other components too.
It's not very practical as the system uses that last generation of computer components so a new machine would be in your best interest upgrade wise for newer games and media cards.

Posted on Feb 26, 2008

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NO SOUND HEAR


Hi, Do this beeping code for motherboard troubleshooting. First disconnect all memory,external video card, etc only motherboard and power supply. Then power on if you hear continuous beeping means the motherboard working good. Please do this beeping code troubleshooting.
No beeping means Short, No power, Bad CPU/MB, Loose Peripherals. One beeping means Everything is normal and Computer posted fine. Two beeping means POST/CMOS Error. One Long Beep, One Short Beep means Motherboard Problem.
One Long Beep, Two Short Beeps means Video Problem.
One Long Beep, Three Short Beeps means Video problem.
Repeated Long Beeps means memory error.
Continuous Hi-Lo Beeps means CPU Overheating.






Jul 14, 2011 | Computers & Internet

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Beep Code Explained


Thanks to Transcend Technical Support for this great Brief of understanding beep codes that is found here
This is a long post and it may be truncated at the bottom. If so, use the link above to go to the Transcend web site where these are found




1.General POST (initial system boot) BEEP Codes
If you do not know the BIOS manufacturer, the following will be the general Beep codes:
• 1 Long and 1 Short Beep ?Bad Motherboard
• 1 Short Beep and nothing else happens ?Disk Drive/Video Related Problems
• 1 Long and 2 Short Beeps ?Bad Video Card
• 1 Continuous Beep or Non-stop short Beeps ?Bad Power Supply
• 3 Short Beeps - Bad Memory
2.American Megatrends Inc. (AMI) BEEP Codes
• 1 Beep - Memory refresh timer error.
Reseat the memory, or replace with known good modules.
• 2 Beeps - Parity Error
Reseat the memory, or replace with known good modules.
• 3 Beeps - Main memory read / write test error.
Reseat the memory, or replace with known good modules.
• 4 Beeps - Motherboard timer not operational
• 5 Beeps - Processor Errors
• 6 Beeps - Keyboard controller BAT test error.
• 7 Beeps - General exception error.
• 8 Beeps - Display memory error.
If the system video adapter is an add-in card, replace or reseat the video adapter. If the video adapter is an integrated part of the system board, the board may be faulty.
• 9 Beeps - ROM checksum error
• 10 Beeps - CMOS shutdown register read/write error
• 11 Beeps - Cache Memory Bad

Beeps 4-7, 9-11
Fatal error indicating a serious problem with the system. Consult your system manufacturer.
Before declaring the motherboard beyond all hope, eliminate the possibility of interference by a malfunctioning add-in card. Remove all expansion cards except the video adapter.
?If the beep codes are generated even when all other expansion cards are absent, the motherboard has a serious problem. Consult your system manufacturer.
?If the beep codes are not generated when all other expansion cards are absent, one of the add-in cards is causing the malfunction. Insert the cards back into the system one at a time until the problem happens again. This will reveal the malfunctioning add-in card.
3.Award Bios BEEP Codes
1 Long Beep: Memory problem
Explanation: There is a failure of some sort related to the system memory.
Diagnosis: The first bank of memory probably has a failure of some sort; this is usually just a physical problem such as an incorrectly inserted module, but may also mean a bad memory chip in a module. It is possible that there is a failure related to the motherboard or a system device as well.

• 1 Long, then 2 Short Beeps: Video error
Explanation: The BIOS is unable to access the video system in order to write any error messages to the screen.
Diagnosis: This is usually caused by a problem with the video card, or the memory on the video card. It can also be a motherboard issue.
• 1 Long, then 3 Short Beeps: Video error
Explanation: The BIOS is unable to access the video system in order to write any error messages to the screen.
Diagnosis: This is usually caused by a problem with the video card, or the memory on the video card. It can also be a motherboard issue.
• Continuous Beeping: Memory or video problem
Explanation: The system is producing constant beeping in no specific pattern, or a fast "ringing" sound.
Diagnosis: This is usually caused by a problem with the system memory, or possibly the video card. The memory is more likely--the system complains long and loud if it can't find any usable memory, as there is no way to even start the boot process when this is the case. The motherboard itself could also be the problem.
• Other Beep Codes
Explanation: You have encountered an Award BIOS beep code I do not have documented.
Diagnosis: Award says that any beep patterns other than "one long followed by two short" are likely problems with the system memory. However, of late they have started adding other beep codes to their systems as well.
4.Phoenix BEEP Codes

• 1-1-3
Explanation: Your computer can't read the configuration information stored in the CMOS.
Diagnosis: Replace the motherboard.

• 1-1-4
Explanation: Your BIOS needs to be replaced.
Diagnosis: Got to your motherboard manufacturers web site and download the new Bios.
• 1-2-1
Explanation: You have a bad timer chip on the motherboard.
Diagnosis: Replace the motherboard.
• 1-2-2 or 1-2-3 or 1-3-1 or 1-3-3 or 1-3-4 or 1-4-1
Explanation: Motherboards is bad.
Diagnosis: Replace the motherboard.
• 1-4-2
Explanation: Some of your memory is bad.
Diagnosis: Go to Basic Trouble Shooting
• 1-3-1
Explanation: Motherboards is bad.
Diagnosis: Replace the motherboard.
• 2-_-_ Any combination of beeps after two
Explanation: Some of your memory might be bad.
Diagnosis: Go to Basic Trouble Shooting
• 3-1-_
Explanation: One of the chips on your motherboard is broken.
Diagnosis: Replace the motherboard.
• 3-2-4
Explanation: Keyboard controller failure.
Diagnosis:
• 3-3-4
Explanation: Your computer can't find the video card.
Diagnosis: Is it there? If so, try swapping it with another one and see if it works.
• 3-4-_
Explanation: Your video card isn't working.
Diagnosis: Replace Video Card.




on Jan 20, 2009 | ASUS P5W DH Deluxe Motherboard

1 Answer

My computer will not power on, only a flashing green light on the back is on. I just bought a new computer and would like to transfer my files to my new computer. Why my old computer will not power on?...


Hi and welcome cj4man1 !
Extract the Hdd out of your old computer . Place it in a external usb box and connect the box to your new pc . You will be able to access and transfer your data .
The issue about your old computer is another matter an could have several reasons , such as power supply , damaged Hdd , defective memory , damaged motherboard ...etc ...
best regards ,
fanaudi .

Feb 20, 2011 | HP Pavilion a450n PC Desktop

1 Answer

Had a Bio Tech Motherboard installed with 2 G DDR2 Memory used Intel Celleron Chip (2.4 Gig HZ) . Problem-on Board Video goes blurry. USB ports after a few seconds hold no power. Tried memory, all cords...


The only common denominator is the computer power supply.
It is also possible that a power regulator on the motherboard is bad. I suspect its is the 5 volt power rail. The two common supplies on your motherboard are 12 volts and 5 volts. USB uses the 5v supply.
The simplest solution is to borrow another similar power rated computer power supply and put it in yours to see if the problem is fixed. If your power supply is rated at (for example) 250 watts or even as large as 400w, make sure the replacement is the same rating or even larger ie replace 250 w with a 250 w or a 400 w, but do not use a lower rated power supply. ie dont try a 250w to replace a 400w supply.
If the problem is still there another motherboard is the likely next step.
Before spending bucks, you could try disconnecting anything not really required to see if the power supply is indeed failing (often a burning smell from the rear fan is a good indicator). Disconnect things like dvd drive, cd burner, anything on the USB ports eg printer, external hard drives, modem, extra cards inserted into the motherboard on PCI slots etc etc, but leave the mouse and keyboard if they are USB devices. This will ease the load on the power supply and/or the motherboard power regulators. Basically you want a motherboard with only RAM memory, a processor and a video card with only a keyboard, mouse and monitor and the main bootable hard drive connected, and nothing else. See if you can get it working without the extra bits attached. you could then try shutting down and re-attaching devices one by one until the problem occurs. This could either prove the last connected device is drawing too much current, or more likely the power supply is failing as the load increases.
My bet is the power supply and they are cheap to buy. Make sure you buy the right supply. It might be an ATX supply with a 20 pin main connector which attaches to the motherboard (big chunky white connector). There are 24 pin models which don't generally work on the older motherboards that use the Celeron chips.
Good luck,
Steve

May 03, 2010 | Intel Motherboard

2 Answers

What is the beep code asus p5ntws


AMI (American Megatrends International) BIOS Beep Codes.
AMI BIOS uses beeps of the same length and pitch. The error is displayed as a number of beeps. For example, 4 beeps indicated a timer failure.
BEEP CODE MEANING POSSIBLE CAUSE
1 Beep (No video) Memory refresh failure Bad memory
2 Beeps Memory parity error Bad memory
3 Beeps Base 64K mem failure Bad memory
4 Beeps Timer not operational Bad motherboard
5 Beeps Processor error Bad processor
6 Beeps 8042 Gate A20 failure Bad CPU or Motherboard
7 Beeps Processor exception Bad processor
8 Beeps Video memory error Bad video card or memory
9 Beeps ROM checksum error Bad BIOS
10 Beeps CMOS checksum error Bad motherboard
11 Beeps Cache memory bad Bad CPU or motherboard



Award BIOS Beep Codes
Award BIOS uses beeps of varying duration. A long beep will typically last for 2 seconds while a short beep will last only 1 second. Award BIOS also uses beeps of different frequency to indicate critical errors. If an Award BIOS detects that the CPU is overheating it may play a high pitched repeating beep while the computer is running.
BEEP CODE MEANING POSSIBLE CAUSE
1 Long, 2 Short Video adapter failure Bad video adapter
Repeating (Endless loop) Memory error Bad memory or bad connection
1 Long, 3 Short Video adapter failure Bad video adapter or memory
High freq. beeps (while running) CPU is overheating CPU fan failure
Repeating High, Low beeps CPU failure Bad processor



Phoenix BIOS Beep Codes
Phoenix BIOS uses beep code patterns to indicate problems. In the table below the '-' indicates a brief pause between beeps.
Example: 1 - 1 - 2 would sound like BEEP <pause> BEEP <pause> BEEP BEEP

BEEP CODE MEANING POSSIBLE CAUSE
1 - 1 - 2 CPU / motherboard failure Bad CPU / motherboard
1 - 1 - 3 CMOS read/write failure Bad motherboard
1 - 1 - 4 BIOS ROM failure Bad BIOS chip
1 - 2 - 1 Timer failure Bad motherboard
1 - 2 - 2 DMA failure Bad motherboard
1 - 2 - 3 DMA failure Bad motherboard
1 - 3 - 1 Memory refresh failure Bad memory
1 - 3 - 2 64K memory failure Bad memory
1 - 3 - 3 64K memory failure Bad memory
1 - 3 - 4 64K memory failure Bad memory
1 - 4 - 1 Address line failure Bad memory
1 - 4 - 2 Parity error Bad memory
1 - 4 - 3 Timer failure Bad motherboard
1 - 4 - 4 NMI port failure Bad motherboard
2 - 1 - 1 64K memory failure Bad memory
2 - 1 - 2 64K memory failure Bad memory
2 - 1 - 3 64K memory failure Bad memory
2 - 1 - 4 64K memory failure Bad memory
2 - 2 - 1 64K memory failure Bad memory
2 - 2 - 2 64K memory failure Bad memory
2 - 2 - 3 64K memory failure Bad memory
2 - 2 - 4 64K memory failure Bad memory
2 - 3 - 1 64K memory failure Bad memory
2 - 3 - 2 64K memory failure Bad memory
2 - 3 - 3 64K memory failure Bad memory
2 - 3 - 4 64K memory failure Bad memory
2 - 4 - 1 64K memory failure Bad memory
2 - 4 - 2 64K memory failure Bad memory
2 - 4 - 4 64K memory failure Bad memory
2 - 4 - 4 64K memory failure Bad memory
3 - 1 - 1 Slave DMA failure Bad motherboard
3 - 1 - 2 Master DMA failure Bad motherboard
3 - 1 - 3 Interrupt controller failure Bad motherboard
3 - 1 -4 Slave IC failure Bad motherboard
3 - 2 -2 Interrupt Controller failure Bad motherboard
3 - 2 - 3 <RESERVED>
3 - 2 - 4 Keyboard control failure Bad motherboard
3 - 3 - 1 CMOS batter failure Bad CMOS battery
3 - 3 - 2 CMOS configuration error Incorrect setting
3 - 3 - 3 <RESERVED>
3 - 3 - 4 Video memory failure Bad video card or memory
3 - 4 - 1 Video init failure Bad video card or memory
4 - 2 - 1 Timer failure Bad motherboard
4 - 2 - 2 CMOS shutdown failure Bad motherboard
4 - 2 - 3 Gate A20 failure Bad motherboard
4 - 2 - 4 Unexpected interrupt Bad processor
4 - 3 - 1 RAM test failure Bad memory
4 - 3 - 3 Timer failure Bad motherboard
4 - 3 - 4 RTC failure Bad motherboard
4 - 4 - 1 Serial port failure Bad motherboard
4 - 4 - 2 Parallel port failure Bad motherboard
4 - 4 - 3 Coprocessor failure Bad motherboard or CPU.
9 - 2 - 1 Video adapter incompatibility Use a different brand of video card

Apr 20, 2010 | ASUS P5NT WS (P5NT WS GREEN) Motherboard

2 Answers

What type of video card can i add to this motherboard. I want to replace the monitor with a 22" Samsung LCD flat panel. Do I look for an AGP card or a PCI card? What is the max Ram size? ie: 256/512 etc....


If you have an AGP slot available, use it. If not, you'll need to get a
PCI card. The motherboard does not care how much memory is on the video card.
As for the motherboard itself, go on the HP site and enter your computer model number (not the motherboard number) and see if you can pull up the specs on upgrading your memory. Also, any reliable memory vendor will be able to tell you how much memory the motherboard will handle.

Sep 24, 2009 | Compaq (261671-001) Motherboard

1 Answer

HP a1712n How to troubleshoot MOB problem?


you can consider 4 factor on no video,it maybe video card or memory card,processor last mother board this if PSU was good,you also check memory card to other computer,somerime need only to clean terminal slot of memory by pencil eraser,eraser slot then put it back,also video card same process in cleaning try also to other computer.Instale good memory card and good video card even with out hard drive,cd room the mother board.if does not run,defective motherboard,

Mar 16, 2009 | HP Pavilion a705w PC Desktop

1 Answer

HP Media Center m1195c PC


It's a rather indepth process and is usually just easier to replace the computer.  Motherboards have many different adapters / slots / options.  If you're meaning to replace the motherboard and processor cpu, it'd be best to buy a package deal from newegg / tigerdirect / etc.  To be able to use your other components, you'd have to make sure the new motherboard has the same type memory slots, video card slot, etc.

Sep 22, 2008 | HP Media Center m1195c (PJ475AA) PC...

1 Answer

Narly


  1. Clean cooling components that have become clogged with dust. If beeping persists, continue to the next step.
  2. Remove a memory module. If the PC stops beeping, the memory module may be bad, is the wrong type of memory for the motherboard, or was not fully seated/connected. Try reseating the memory into the socket to see if a connection was the problem, otherwise replace the module. Remove each memory module, replacing the one that was previously removed. Once all modules have been checked, if beeping persists, continue to the next step.
  3. If your computer has a graphics card, remove it. If the beep code changes or continues with the same beep pattern, the video card may still be good. reseat the video card into its socket and continue to the next step. If the beep code goes away, the video card may be bad. Try reseating the video card, making sure it is fully locked into the connector on the motherboard. If problems persist, replace the card.
  4. Remove a PCI card. If the beep code goes away, the card may be bad. Try reseating the card into its connector on the motherboard. If problems persist, replace the card. Remove each PCI card, replacing the one that was previously removed. Once all cards have been checked, if beeping persists, continue to the next step.
  5. Disconnect hard drives and CD/DVD drive cables (IDE/ATA) from the motherboard socket. If the beep code goes away, the cable or socket is probably bad. Look for bent pins inside the IDE socket on the motherboard and straighten any bent pins. Try reseating the cables into the connectors. If problems persist, the drive itself may be bad and may need to be replaced. Disconnect each drive cable, replacing the one that was previously disconnected, until all have been checked. Once all connections have been checked, if beeping persists, continue to the next step.
  6. At this point, the problem probably involves the motherboard or processor. Make sure any jumpers on the motherboard have not fallen off their pins and into the case. Make sure jumpers are set correctly.

Jun 09, 2008 | HP Pavilion 8860 (P2941A) PC Desktop

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