Acer aspire m3640 PC power comes on, give three beeps but no display

Below are IBM BIOS Beep codes that can occur. However, because of the wide variety of models shipping with this BIOS, the beep codes may vary. Beep Code Description Document No Beeps No Power, Loose Card, or Short. CH000312 1 Short Beep Normal POST, computer is ok. No problem 2 Short Beep POST error, review screen for error code. See screen Continuous Beep No Power, Loose Card, or Short. CH000607 Repeating Short Beep No Power, Loose Card, or Short. CH000607 One Long and one Short Beep Motherboard issue. CH000607 One Long and Two Short Beeps Video (Mono/CGA Display Circuitry) issue. CH000607 One Long and Three Short Beeps. Video (EGA) Display Circuitry. CH000607 Three Long Beeps Keyboard / Keyboard card error. CH000304 One Beep, Blank or Incorrect Display Video Display Circuitry. CH000607

Hi

THe most common beeps that you will encounter 95% of the time in repairing PC's are:

1 beep - computer ok
continous beeps / long beeps - memory error
continous short beeps - bios boot block/corrupted bios
1 long beep followed by 3 short beeps - video card error


or this might help

you can check out this list



AMI BIOS

1 short - Computer ok
2 short - RAM failure
3 short - Parity RAM failure
4 short - System timer failure
5 short - Motherboard failure
6 short - Keyboard controller error
7 short - CPU failure
8 short - Video RAM failure
9 short - ROM BIOS error
10 short - CMOS read/write error
11 short - Cache RAM error
1 short, 3 long - Memory failure
1 short, 8 long - Video adapter failure

Check board/chipset makers website for more infomation.

AWARD BIOS

1 long - Memory error
1 long, 2 short - Video error
1 long, 3 short - Video failure
Continuous beeps - Memory or video failure

note that AWARD relies on motherboard manufacturers to develop their own beep codes - the above are only their own internal codes. You will need to refer to your own manual for an explanation of precise codes.


Standard IBM beep codes.

No beep - Power supply or motherboard failure
1 short - System is ok
2 short - POST error (code displayed on screen)
Repeating short - Motherboard failure
1 long, 1 short - Motherboard failure
1 long, 2 short - Video display adapter failure
1 long, 3 short - Video display adapter error
3 long - Keyboard error


Pheonix beep codes

1-1-3 CMOS memory failure
1-1-4 BIOS failure
1-2-1 System timer error
1-2-2 Motherboard error
1-2-3 Motherboard error
1-3-1 Motherboard error
1-4-1 Motherboard error
1-4-2 Memory error
2-x-x Memory failure (any number of other beeps)
3-1-x Chipset error (any number of other beeps)
3-2-4 Keyboard controller error
3-3-4 Video adapter failure
4-2-4 Expansion card failure
4-3-4 Time of day clock failure
4-4-1 Serial port error
4-4-2 Parallel port error
4-4-3 Math co-processor error


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g'day!

i would like to know how many and the kinds of beeps? there are what they call beep codes which indicates what kind of problem the your laptop is experiencing: here are the common ones:

0 beep = no power, loose card, short
1 short beep = normal,POST (Power On Self Test), your computer is ok
2 short beeps = POST error, review screen for error code.
continuous beeps = no power, loose card, short
repeating short beeps = no power, loose card, short
1 long, 1 short beeps = motherboard issue
1 long, 2 short beeps = video issue
1 long, 3 short beeps = video display circuitry
three long beeps = keyboard/keyboard card error
one beep, blank, incorrect display = video display circuitry

aside from the 1 short beeps, you need to take your laptop to a technician to have it looked at.

cheers mate!
jelo a.

Hi names Rui, i question for you does your PC give a beeping sound when you turn it on? if does can you tell me how many beeps it gives?

if it give a designated number of beeps this might be the problem i will give you a chart so you can differentiate the warning beeps you hear.

warning beeps:

1 Short Beep DRAM refresh failure
2 Short Beep Parity circuit failure
3 Short Beep Base 64k RAM failure
4 Short Beep System time failure
5 Short Beep Process failure
6 Short Beep keyboard control gate A20 failure
7 Short Beep Virtual mode exeption failure
8 Short Beep Display memory read/write test failure
9 Short Beep ROM BIOS checksum failure
10 Short Beep CMOS shutdown read/write error
11 Short Beep Cache memory error
1 long, 3 short Beep Conventional/Extended memory failure
1 long, 8 short beep Display/Retrace test failed

hope this will determine the problem if none of this warning beep is heard try reseting the power botton in you PC cause sometimes the power botton will loosen cause of continuous use of the botton.

hope this will help you.

Good day sir, hi, You need a thorough check on your PC.
But first try testing the Motherboard, Processor and Memory module.

As this point you need a friend, that knows how to tinker with your PC

Or you may need to do this.

1. memory testing:
Try replacing a new memory ram module on your PC, get the modules out of the memory slot, and let it be tested on another PC. if good,

2. power supply
Test for the power supply box, remove the 20/24 pin power connector from the mainboard and short the green and any black wire, your fan should blow out air.

3. Test for motherboard.
remove all coonections from the motherboard, except the 20/24 pin power connector, and the 12v 4-pin molex power connector, connect the pc speaker or the thumb speaker on the speaker port, connect a keyboard, clear the CMOS, (or remove the battery temporarily), connect the header panel (power switch, reset, power led) place the processor and memory (the tested good one). power on.


You should hear a beep (good) The keyboard will light up the three leds, then a few seconds, the numlock led.

If you hear 1 long and 2 or 3 short beeps, problem with the display section. Reseat any graphics card. test again.

If you hear continous beeps, reseat the memory, if the beeping persist, replace your motherboard.

If you hear nothing? only fan blowing, replace your motherboard.

I can only give you instructions, you need a someone who knows how to service a PC.

Disconnect all devices from the power supply EXCEPT the motherboard
Remove any extra cards including video etc.(plug monitor into the onboard)

If you hear any beeps these can indictate where the fault is.
either of these sites below will help you further with that

Beep codes Pc

More beep codes

Power up the pc and see if the fans are working.
If not then double check the power connections to the board.

If you still have no fans it is time to suspect the power supply as the probable cause.

If the fans worked then you should have gotten a display which told you there was an error and offering you a chance to go into the BIOS. ignore it and shut down the PC.

Now connect one drive only and boot again.

Repeat that until you identify the component that is giving you a problem.

Once you find the problem then remove or disconnect and carry on with the rest to see if another component might also cause a problem

If there is only one problem device then you may want to investigate that device further, Unless you don't mind replacing it
Hope this gives you the information you need

Hope this gives you the information you need

Bob
Moderator

It would be very decent of you to consider the quality of our experts answers and judge them accordingly as you pass through FixYa.

Thank you

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

The beeps are telling you there is a hardware failure (POST). The number and length of beeps will give a better indication as to what has failed. Write back with that info and someone on this web site will interpret this for you.

No Beeps
No Power, Loose Card, or Short.
1 Short Beep
Normal POST, computer is ok.
2 Short Beep
POST error, review screen for error code.
Continuous Beep
No Power, Loose Card, or Short.
Repeating Short Beep
No Power, Loose Card, or Short.
One Long and one Short Beep
Motherboard issue.
One Long and Two Short Beeps
Video (Mono/CGA Display Circuitry) issue.
One Long and Three Short Beeps.
Video (EGA) Display Circuitry.
Three Long Beeps
Keyboard / Keyboard card error.
One Beep, Blank or Incorrect Display
Video Display Circuitry.

what you are hearing is a beep code, if its 3 short beeps then its the memory which has developed a fault and it may need to be replaced