ok so i bought new parst for my pc, motherbaord , memory cpu and graphics card all compatible with each other i have everything connected corrrectly but when i boot up i get a beeping like a siren type sound coming from the machine what could this mean

Moved Post from new thread: Please don't post new threads on the same issue it will only make life harder for everyone trying to help you. Upgrader

ok i understand ,,, anyway my mother board is an
ABIT nvidia force 550 KN9S board
i bought it as a bundle that is supposed to be compatible with each other. the memory is
OCZ ddr2 pc2 6400 dual channel 1gb stick X 2
and my processor is
AMD ATHLON 64X2 3800+ AM2

ALL THESE PARTS ARE MEANT TO BE COMPATIBEL BUT WHY AM I GETTIN A BEEPIN NOISE WHEN I BOOT UP

Do you know what BIOS your system has so we can look up the beep code?

Also have you tried taking out all components to leave the bare mininum i.e. try swapping the ram sticks out.

ok a new day of testing hehe, i boot my machine up this morning with both sticks in, and there is no beeping, but the machien wont boot up , so i took one stick out and still nothing would boot up, i then swapped the sticks around leaving one in and one out and it started beeping again, i then proceeded to put the other stick in and it stopped beeping but wouldnt boot, so it beeps with a certain one of the two sticks, and the other sticks causes it not to boot up, im guessing its faulty memory, but i would like to test it somehow

Yes it sounds like faulty memory. Can you get into the BIOS, or does it not get that far?

If so note down the name of the BIOS (award, amibios, phoenix etc). And we will see what the beeps mean.

Also what is the exact beep, is it single, short, long how many etc?

its ok now sorted, it was an ABIT warning message, as i had my cpu fan plugged into the connecter on the case instead of the motherbaord so it wasnt registering

thanx for your help anyhoo