Why my PC beeps when i turn it on?

Question

WHEN I TURN ON THE COMPUTER,THE POWER LIGHT DON'T COME ON BUT THE OTHER DO.ALSO THE MONITOR DOESN,T COME ON.A BEEPING SOUND COMES FROM INSIDE THE COMPUTER.

Answer

This question was answered on February 29, 2004. Much of the information contained herein may have changed since posting.

The first thing i will say is that the memory is not in the slot properly, reset the RAM.

here are some beep codes I hope thay will help you to fix the problem

1-2 beeps- If you don't see anything, check your monitor and video card first Is everything connected? If they seem fine, your motherboard has some bad chips on it First reset the SIMMs and reboot If it does the same thing, one of the DRAM refresh chips on the motherboard is bad, and you most likely need to get another motherboard since these chips are soldered on

1 Long Beep indicates a problem with memory in the first bank, usually an unseated memory module

1 Long, 2 Short indicates a problem with the video card or the memory on it

1 Long, 3 short also indicates a problem with video or the memory on video card

Continuous this usually indicates a problem with the memory, but sometimes is a video problem

# of beeps description What's Wrong

none You're supposed to hear at least one beep If you truly don't hear anything, either your computer's power supply, motherboard, or PC speaker is no good

1 Refresh failure One beep is good! Everything is A-OK, that is, if you see things on the screen If you don't see anything, check your monitor and video card first Is everything connected? If they seem fine, your motherboard has some bad chips on it First reset the SIMMs and reboot If it does the same thing, one of the DRAM refresh chips on the motherboard is bad, and you most likely need to get another motherboard since these chips are soldered on

2 Memory parity error Your computer has memory problems First, check video If video is working, you'll see an error message If not, you have a parity error in your first 64K of memory Check your SIMMs Reseat them and reboot If this doesn't do it, the memory chips may be bad You can try switching the first and second banks memory chips First banks are the memory banks in which your CPU finds its first 64K of base memory You'll need to consult your manual to see which bank is first If all of your memory tests good, you probably need to buy another motherboard

3 Base 64K memory failure Same as 2 beeps; follow diagnosis above

4 Timer not operational Your problem could be a bad timer The system timer failed to work properly

5 Processor error Your motherboard is complaining Try reseating the memory and rebooting Since this indicated a processor failure, you could probably get away with just replacing the CPU

6 i8042 - gate A20 failure The chip on your motherboard that controls your keyboard isn't working First, try another keyboard If that doesn't help, reseat the chip that controls the keyboard, if it isn't soldered in If it still beeps, replace the chip if possible The chip is erroring in the gate A20 switch that allows the system to run in virtual mode Replace the motherboard if the chip is soldered in

7 Processor exception interrupt error Your CPU is broken and no good It has generated an interrupt failure error

8 Display memory read / write error Your video card isn't working Make sure it is seated well in the bus If it still beeps, either the whole card is bad or the memory on it is Your best bet is to install another video card

9 ROM checksum error Your BIOS is bad; replace it

10 CMOS shutdown register read / write error Your problem lies deep inside the CMOS All chips associated with the CMOS will likely have to be replaced Your best bet is to get a new motherboard

11 Cache memory bad Your cache memory is bad and your computer disabled it for you You could reactivate it by pressing -Ctrl- -Alt- -Shift- - - , but you probably shouldn't Instead, replace your external cache memory

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Author

Posted by Student of Katharine Gibbs School - New York on February 29, 2004