Lenovo 057829U User Manual - Page 74
Error messages, No-beep symptoms, Press F1 to enter BIOS Setup Utility. Press
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Error messages Table 3. Error messages Symptom or error (beeps, if any) Bad CRC2. Enter BIOS Setup Utility, and load Setup defaults. (two short beeps) Fan error. (four short beeps, one long beep) DRAM is unplugged. (one short beep, pause, three short beeps, pause, three short beeps, pause, one short beep.) DRAM is not well plugged. (one short beep, pause, three short beeps, pause, three short beeps, pause, one short beep.) Operating system not found. System Configuration Data Read Error (two short beeps) FRU or action, in sequence Press F1 to enter BIOS Setup Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10, and restart the computer. 1. Fan. 2. Thermal grease. 3. System board. Memory card is not installed. Install memory card. Reinstall the memory card. 1. Check that the operating system has no failure and is installed correctly. 2. Enter BIOS Setup Utility and see whether the hard disk drive is properly identified. If you still see the same error message, check the boot sequence. 3. Reinstall the hard disk drive. 4. Reinstall the operating system. Press F1 to enter BIOS Setup Utility. Press F9, and Enter to load the default setting. Then save the current setting by pressing F10, and restart the computer. No-beep symptoms Table 4. No-beep symptoms Symptom or error FRU or action, in sequence No beep, power-on indicator on, LCD blank, 1. Make sure that every connector is and no POST. connected tightly and correctly. 2. DIMM. 3. System board. No beep, power-on indicator on, and LCD blank during POST. 1. Reseat DIMM. 2. System board. The power-on password prompt appears. A power-on password or a supervisor password is set. Type the password and press Enter. The hard-disk password prompt appears. A hard-disk password is set. Type the password and press Enter. 66 ThinkPad Edge 14″, Edge 15″, E40, and E50 Hardware Maintenance Manual