3 beeps is bad RAM on AMI boards or at least it used to be on my Pentium 4. Can you get a stick from somewhere else?
I could possibly borrow one from someone else for the sake of testing. Is there any way of me ensuring that it's a RAM issue without getting different RAM, though?
Sounds like you have already done the classic try with one stick and then the other so RAM is probably 90% likely your problem. Most boards won't POST without memory so there is no way to tell for sure that it isn't the mobo or CPU however since it does beep (function of the mobo POST) My first thought is that they mobo and CPU are fine and your RAM is bad.not 100% guarantee but 90% sure.
Thanks a lot for this information. I'll go about buying new memory later today. Since I have this topic open however I feel that I should add a piece of information. Before this memory error the computer was occasionally shutting off completely randomly (I closely monitored temperatures after a few of these shut downs and it seemed like everything was running at a good temperature so I don't think anything overheated). The computer would just shut off without any BSOD or other error, and then after perhaps 5-10 seconds it would sometimes turn itself back on again. They happened totally randomly. Would this be a motherboard issue, or a power supply issue, or would it be something related to the memory problem?
Thanks a lot for your help so far.