RAM can die (like anything), but it's unlikely.
If your PC has a diskette drive, visit www.memtest86.com to download a program that makes a bootable diskette that will test your RAM.
But I wonder what makes you ask your question. Maybe better tell your problem in stead of a possible diagnosis?
I have a pc at home running xpsp2,hdd 40gb,ram 352mb,2.10hz,cdrom drive,my question is is it true that rams do die? as in do they have a period in which they work properly and after that they seize to operate and if so how does one diagnose the bad ram becouse as for my case I have two rams.Please help and thank you in advance.