When my computer starts up, it makes a loud beeping noise like it normally does. All computers are like that.

For some reason my computer seems to making that beeping noise when I play ANY game or use any application that uses a bit of RAM.
It can't be overheating, the fans are dust free and working, because I cleaned them.

Games that the computer is having a problem with:
Angry Birds (REALLY!?)
Runescape
Halo CE
Stepmania

Those are like my only PC games. Any windows application that uses a lot of computer RAM also causes this noise. i.e. Skype when it crashes.

I made sure everything is plugged in and I am not sure what the problem is...

Windows XP Professional SP3 x86 (32 bit)
1.5 Gb of ram
Over 120 gigs left of hard drive space
Nvidia 7300 GT (Video Card)

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