1 long continuous beep and red screen at power on!

[NOS]

Occasionally, when i turn the computer on it gives me one long continuous beep and a red screen. If i reset the computer it usually boots okay.
Occasionally, it will lock in windows also when running programs. No games are run on this machine.
The machine:
Amd K6-3 450
Asus p5a MoBo rev 1007
Diamond viper v330
128mb ram
generic sound card
3com nic
Any ideas? Thanks

 

[watkins]

Have you flashed your bios lately? Only time I've experienced the long and continuos beep was with a bios flash gone bad. But then it would not reboot. Bios then went to mb manufacturer for reprogram.