This code in beeps is depending on which brand BIOS is running your motherboard.
Have a look here to get some aid on that:
https://www.lifewire.com/how-to-troubleshoot-beep-codes-2624889
Good luck finding out.
A.Misset
SOURCE: Added a memory stick to my Dell 2400 Desktop computer and the monitor, mouse, & keyboard won't work
Hi
The supported Memory types for Dimension 2400 Series is PC2100 (266-MHz) or PC2700 (333-MHz) DDR SDRAM (non-ECC). Supported Memory capacities are 128, 256, or 512MB and a Max if 1GB (1024MB).
The first obvious question is does the new 512MB Memory module meet the above specification? Some Memory modules are able to steep down speed.
If it does, then first ensure the new memory module is properly installed. Take ESD (ElectroStatic Discharge) precautions or you may damage the new memory module and/or the system board.
To proceed compare the system beeps and diagnostics lights color and sequence to the Advanced Troubleshooting guide.
It is possible that the new memory is DOA (Dead On Arrival). Or there is a new fault on the system. If you have access to another compatible system, you may test the new and old memory modules. You may also swap the new and old memory modules to determine if the memory slot is at fault.
Lastly, if you remove the new memory module, does the system complete POST (Power On Self Test)?. If it does you may indeed have a DOA or incompatible part.
Mike
SOURCE: 6 beeps on start up, no video
Without knowing what yo have for a BIOS, it is difficult to diagnose. The below link is a list of beep error codes for different BIOS types. Check your BIOS to see if it is one on the list and see what it means:
http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=guide_beep_codes
SOURCE: Turns on, no bios no screen, just beep.
Now the question is, when the computer first starts up and you hear the beep, that is where it will tell you what your problem is depending on the beep you get.
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 error
One Beep, Blank or Incorrect Display = Video Display Circuitry
If it is the last one, then try doing the following.
1. Disconnect external devices = Unplug everything from the back of the computer and then restart it. If it starts up, then it is one of the peripherals that is plugged in. You will then need to turn off the computer and gradually plug each one in and turn the PC back on to see if the peripheral is the problem. If that isn't the problem, the proceed to #2.
2. Cable check = With the computer shut down, make sure all the cables within the PC are attached properly. Once you finish doing that, turn on the PC and that isn't the cause, continue on...
3. Disconnect all expansion cards = Sometimes another expansion card can become loose and cause various amounts of issues. Remove each expansion card (clean them if necessary of dust) and replace them. Turn on your PC. If it doesn't start move to the next step.
4. Disconnect all drives = disconnect the data cables from the CD-ROM, hard drive, and floppy drive from the motherboard (make sure to mark them so you remember where they plugged into). This will either remedy the situation or you will see an error when you reconnect each device one at a time to determine which device/cable is causing the issue.
5. Remove the RAM = Loose or bad RAM can cause PC's to not boot or boot incorrectly. Remove each stick and replace them one by one alone in each memory slot. If the PC boots up in each slot, then your golden, but if a slot is defective, then your motherboard is damaged in that slot. You can still use the other slots as long as you use the defective one. If a stick of RAM doesn't allow your computer to boot up, its quite possible that stick of RAM is defective and will need to be replaced. But make sure you try out all the other options before throwing away a stick merely because the PC doesn't boot. A faulty stick can be the problem, but if the problem lies elsewhere, you may be throwing away a good stick of memory thinking it may be bad.
6. Disconnect and reconnect the CPU = Most CPU's are easy to remove, but if you aren't familiar with it. Read your manual on how to remove the CPU. Once you remove it and re-seat the CPU, reboot your PC.
7. If after you have tried all the previous steps and your PC still doesn't boot, then it is most likely that your motherboard, CPU, RAM, or power supply is defective and must be replaced. If you are unfamiliar with fixing the problem (or have never built your own PC) you can opt to have someone repair it or you can start with the cheapest option of purchasing a single stick of new memory and see if the memory was indeed the original problem. If the PC still does not boot with new memory, then it is most likely your motherboard, CPU, or power supply that is dire straights.
SOURCE: The computer will not boot up when power button is
This will be a memory / ram problem. If you have more than 1 module installed first try switching another module to the first bank if still not working try 1 module at a time until you find the defective one. Memory is pretty cheap nowdays or you may find you didnt really need the total amount of memory installed. Hope this helps........from Scott
SOURCE: 3 medium beeps on pc; repeating
According to Systemax, the problem is solved by removing the video card, then the RAM, followed by installing the RAM in the first slots (0 & 1) then reinstalling the video card.
They say the components are too close together and can be slightly off-set if not installed in that order.
Good luck.
The only other idea is the BIOS battery is dead.
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