Dear sir, I wanted to know the error of vitual memory.Some times in windows 2000 vitual memory dumping error show me on screen.In hat case what should i do let me know?

I dont understand your question, please rephrase

when i am running game and side by side i also start songs.so suddenly blue screen comes on the screen showing me the virtual memeory dumping and it restart the computer. so let me know the solution.

The computer blue screening means there was a problem with the operating system that it could not recover from, so the default usually is to restart itself. The memory dumping message means that Windows is copying data that was in physical memory to vitual memory on the hard drive, it can be examined and maybe find the reason to the problem, but this is only useful if you are a high end programer that knows what to look for. The reasons for your computer blue screening are very numerous. If it happens everytime you play songs while playing a game, I would look at the website fors the programs your using to see if they have reason why that is happening. Otherwise, it's like going to the doctor and saying "my arm hurts when I raise it like this" and so he says "well, then don't hold it up like that." -Good Luck