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Computer Fails To Switch On

I messed up my BIOS settings and since then all I hear are beeps. One long beep and two short beeps. Nothing happens after these beeps.

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  • emuyatwa Sep 15, 2008

    I tried taking off the battery for some minutes but still it did not work. What I have not tried are the jumpers because I suppose I do not know where they are located.

  • Anonymous Oct 29, 2008

    locate the damn jumpers please

  • Anonymous Mar 04, 2009

    hi.. the problem with my pc is a long beep and it fail to switch on...I cleaned up the motherboard and the power supply. then it does not any beep. help.

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If you still have *********** board manual it will tell you how to reset your bios by removing the battert from your motherboard and its normally a jumper you have to move for 30 secs.
Hope that helps you

Posted on Sep 15, 2008

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What do the beeps codes i am getting mean? 1 short followed by 1 long.


Beep codes don't cause or signify damage, they are just telling you something is wrong. In your case, I would say the RAM is incorrectly seated or in the wrong slots.

2 beeps Memory (RAM) not detected

Remove the RAM and press it HARD until it locks in place. Do a visual check that the indent is against the mounting.

Computer POST and beep codeswww.computerhope.com/beep.htmHelp and support with troubleshooting computer beep codes and other POST related issues.
PC Hell: BIOS Error Beep Codeswww.pchell.com/hardware/beepcodes.shtmlPhoenix BIOS Beep Codes These audio codes are a little more detailed then the AMI codes. This BIOS emits three sets of beeps. For example, 1 -pause- 3 -pause 3 -pause.
beep codes Definition from PC Magazine Encyclopediawww.pcmag.com > Tips > EncyclopediaPC Magazine Tech Encyclopedia Index - Definitions on common technical and computer related terms.
How to Figure Out Why Your PC is Beeping (Beep Codes)pcsupport.about.com > Troubleshooting Guides > Symptoms2015-10-07 · Video embedded · How To Troubleshoot Beep Codes. Is Your Computer Beeping? Here's What to Do. By Tim Fisher. PC Support Expert Share Pin Tweet ...

Jan 23, 2016 | Computers & Internet

Tip

Computer beeps


If you try to power on your computer and nothing happens but a bunch of beeps there is something you can do. The beeps actually mean something. To make sure you can hear the beeps check in the bios options. If there is an option for a silent boot you won't hear any beeps. If you hear one beep every time your computer starts then you don't have to worry about this.

If you want to check this setting refer to my other tip on how to enter bios and change boot settings.

If you try to boot your computer and nothing shows up on your monitor do these steps first.
1-Check all your cables in the back of the computer.
2-check your power source and power cord to the monitor
3-try another monitor if possible
4-If on a power bar try to turn off the power bar and reset the breaker

If you try to boot your computer and nothing happens and you hear beeps look at this website. The beeps you hear are actually telling you what is wrong. Look at the website by clocking on the link below and click on the computer beep codes link. If you want to scroll down past the link it will show you bios codes to enter the bios in your computer


http://www.michaelstevenstech.com/bios_manufacturer.htm

on Jan 28, 2009 | HP Compaq Presario SR1500NX (PX786AA) PC...

1 Answer

I have a P5K Deluxe asus mother board error beeps no visuals


Two beeps is usually the video card.
Do you have a spare video card to change out?
This is why people keep obsolete PCI video cards for just such tests.

Dec 05, 2015 | ASUS P5k Deluxe Socket 775 Motherboard

1 Answer

Short-short-short-long beeps repeated


NOT GOOD My Friend....you just blew the BIOS:
Never update BIOS unless the computer is not working all that well. When doing new Bios, the Precise BIOs for the computer are required. Any change can damage the instruction set and render the BIOs useless. Also...any interruption during the rewriting of a BIOs will mess of the Chip and blank out the instruction set. If you can, with the correct BIOS downloaded to a flash drive, you may restructure the BIOS if they can be flashed again.

Dec 11, 2013 | Lenovo Group Limited Lenovo Thinkcentre...

1 Answer

Black screen green dots


What was the last thing you did on your computer before this happened?
Did you change any system settings in the BIOS?
Did you add new software? or update any software or drivers?
Did you add any new hardware?
Is your system BIOS infected with a virus?
Because it appears that your PC is hanging up during the Power-On-Self-Test [POST]

Here's what happens; when the power is turned on, the computer BIOS [Basic Input/Output System] runs a POST (Power-On Self-Test). It is a diagnostic testing sequence that the computer runs to determine if the hardware [like the mouse, keyboard, hard drive, etc.] is working properly.

If the necessary hardware is detected and found to be operating properly, the computer begins to boot; If the hardware is not detected or is not operating properly, the BIOS issues an error message.

The error message may be a text on the display screen and/or a series of coded beeps, depending on the nature of the problem.

The series or pattern of beeps may vary...they may be in a number of long or short beeps or a mixture of long and short beeps, or even one long continuous beep, depending on what type of BIOS is installed.

Since POST runs before the computer's video card is activated or the integrated graphic chip on the main board, it may not be possible to progress to the display screen.

So if an error is detected during the POST it will halt the boot process because the hardware is essential for the computer's functions.

How many beeps do you hear during the initial POST?

You may have a burned out video chip/card; or corrupt drivers; or even an IRQ [Interrupt Request] conflict.

Nov 26, 2013 | Acer Computers & Internet

2 Answers

Problem on start up


there should be a cmos reset jumper on the motherboard somewhere close to the bios chip. Given you didn't mention the actual model and brand of mobo i cannot be certain. Also you can remove the little watch battery for a few minutes and it too should reset the bios.

Aug 19, 2009 | Computers & Internet

1 Answer

Acer Aspire 9303wsmi display problem, 1 long beep, 2 short. HELP!


Hi,
What you hear are bios beeps. They signal you that something is wrong. These beep's vary by the manufacturer of the bios chip that you have.

You can find out what bios you have by looking at your manual. The common cause for one long and two short beeps is a video problem.

Either the video chip on your mobo is shot, or your video card needs attention.

Hank


Aug 04, 2009 | Computers & Internet

2 Answers

Beeping when i turn on and black screen


IT is either one of three things. 
  1. keyboard missing; check it's plugged in.
  2. graphics card; check that it has not been dislodged and is seated properly.
  3. memory. Are the memory cards properly seated?

Apr 02, 2009 | Dell OptiPlex 170L PC Desktop

1 Answer

At POST I get 2 short beeps


it depends on the bios chip maker Here's some other beep codes:

for Award and Phoenix BIOS:

1 short beep: Normal
2 short beeps: CMOS error
1 long and 1 short beep: DRAM error
1 long and 2 short beeps: Video card error
1 long and 3 short beeps: Keyboard error
1 long and 9 short beeps: ROM error
Long continuous beeps: DRAM not installed correctly
Short continuous beeps: Bad power supply


AMI BIOS:

1 short beep: DRAM flash error
2 short beeps: DRAM ECC check error
3 short beeps: DRAM detect error
5 short beeps: CPU error
6 short beeps: Keyboard error
8 short beeps: Video card error
9 short beeps: ROM error
1 long and 3 short beeps: Bad DRAM
1 long and 8 short beeps: Video card error


Invoking Beep Codes

.

If the computer is actually functioning and the computer beeps continuously, then there is a problem with a voltage on the power supply being incorrect or the CPU overheating. IMMEDIATELY go into the BIOS and check CPU temperature, fan speed and voltages

**********************************************
BIOS Beep Codes

Annoying isn't it? You have built your computer you switch it on and then nothing happens except a few beeps from the PC speaker. Frustration sets in as you try to figure out what is wrong with it. If you didn't already know the computer has already told you the problem. It can't speak of course but it can direct you to the problem. Its all in the beeps. The BIOS can recognise when the problem occurs and sends a signal out to send a certain amount of beeps through the speaker. These beeps then tell you the location of the problem.

Unfortunately not all the BIOS' use the same codes as each other. Two of the main BIOS manufactures AMI and Award (now Phoenix) have different codes for there errors.

AMI BIOS

# of Beeps Error Description
1 Refresh Failure The memory refresh Circuitry is faulty
2 Parity Error Parity error in the Base (1st 64K) of memory
3 64K Base Memory Error Memory error in the base memory (1st 64K)
4 Timer Not Operational Timer 1 is not functioning (also caused by error in base memory)
5 Processor Error CPU error
6 8042 Gate A20 Failure Unable to switch to protected mode
7 Processor Exception Interrupt error The CPU on the CPU card generated an interrupt error
8 Display Memory Read/Write Error Video adapter is missing, incorrectly seated or has faulty memory
9 ROM checksum error The ROM checksum does not match that of the BIOS
10 Coms Shutdown Register Read/Write The shutdown register for coms RAM has failed
11 Cache Memory Bad The cache memory test has failed. Cache memory will be disabled. *** DO NOT enable it ***


With the first 3 beep codes, its well worth re-seating the memory just to make sure that it's in correctly. 8 Beeps is probably the most common in my experience. Can be caused by a badly seated Graphics card. If you have re-seated it then check with another Graphics card in the board.

Always check for loose components before sending the board back as this is the main cause of errors on the POST.



Award BIOS

Award states that they now only use one beep from there BIOS. This beep is one long beep and then two short beeps. This indicates a graphics card problem. Any other beeps should be treated as a RAM problem first and then the board sent in to be inspected.

The reason that the Award BIOS only uses the beep code for display problems is that it tries to display the error on-screen if at all possible. If the BIOS cannot initiate the display adapter then this causes the BIOS to make the beep code for a display error, which must be corrected before any other errors can be determined. Memory Test fails and hard disk failures etc will all be displayed on screen

IBM BIOS

The IBM BIOS works with Short and Long beeps as well as the Award BIOS. However the IBM one does still have codes to work from.

Beep Code Error
1 Short Beep Normal POST, System booted OK
2 Short Beeps POST Error - Code on Display
No Beep Power supply or Motherboard error
Continuous Beep Power supply or Motherboard error
Repeating short beeps Power supply or Motherboard error
1 short, 1 long beep System board error
1 long, 2 short beeps Display adapter error (MDA/CGA)
1 long, 3 short beeps Display adapter error (EGA/VGA)
3 long beeps 3270 keyboard card
Phoenix BIOS
The Phoenix BIOS works on a slightly more complicated manor than the others. It does display an error code for you and produce a series of beeps. This BIOS produces its beeps according to the hexadecimal code the error produces. The Phoenix BIOS has many different codes for its possible errors and so many different beep codes. Rather than list the entire section here, I have provided a link to the official PDF file containing the codes and how they are derived.

Phoenix BIOS Post Codes

System board errors should be looked at by a specialist, Again always try to re-seat components to ensure they are in correctly. If necessary take all components out except for the RAM CPU and graphics card, then try the system. Re-seating components is the number one fix for getting past the POST screen. One badly seated components can cause the entire system not to function. so pick out your bios and follow the steps above to diagnose .hope this helps

Jan 05, 2009 | Dell Dimension 5150 (DIM515MIN) PC Desktop

1 Answer

I am getting 1 long beep and then 6 short ones


Hi canturob,
When a system reports a check sum error the bios is telling you the information stored from the last working boot does not match the current settings stored in the bios. Please power down your MSI system, unplug the power cord. Open the case & clear the bios. Location of JBAT1 on page 3 in manual.
Clear CMOS Jumper: JBAT1 page 10 in the manual. Remove the battery/cmos. Check it's voltage with a volt meter. It should test to 3volts DC. Anything less & the battery needs to be replaced.
While in the case re-check all data cables & power cables for good connection.
The MSI board uses the Award bios. Your current beep code of 1 long & six short is not a common beep code for the Award bios. See bios beep codes here: http://www.bioscentral.com/beepcodes/awardbeep.htm

If the battery checks out ok, you may need to update the bios. Go to MSI: http://global.msi.com.tw/index.php?func=downloaddetail&type=utility&maincat_no=1&prod_no=205
To update your MSI bios (Option only if bios clear fails to resolves the check sum issue).

Good luck canturob!
Mike

Dec 03, 2008 | MSI PM8M-V Motherboard

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