If the CMOS is working, the information should be retained with the system off for more than 24 hours. Check with the board manufacturer to see if a BIOS upgrade is available. See our BIOS page for more information. Ensure all cables are connected and connected firmly. IDE and floppy ribbon cables and power cables can often go loose.
System has no power at all.
Power light does not illuminate, fan inside the power supply does not turn on, and indicator light on keyboard does not turn on. Visually inspect power cable. Make sure power cable is securely plugged in. Defective power cable. Visual inspection, try another cable.