After running for months without problems, PC beeped for over a minute or two while inactive and then shut down. Tried to start and only get a short beep plus a long one before it shuts down. Will not show anything on the monitor. Disconnected the video card, put different ram in, disconnected the hard and floppy drives, and disconnected the CDROM separately with still the same problem. I do not know if this influenced problem but I changed last week the setting in the Bios to Turbo but PC ran properly until now. I am running a Soyo Dragon Lite, Athlon 1700, Award Bios, and WinXP-Pro. All fans are working and even replaced the CPU fan but without ability to connect to motherboard, but instead to power cable. Looked on Award Bios pages to see if the one short and very long beep meant anything with no help. Can anyone help me?