Lenovo ThinkPad Edge E420s (English) User Guide - Page 144
Errors without messages, Solution, Message, Problem, Power plan, Power scheme, Maximum Performance
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Solution: The hard disk is not working. Have the hard disk serviced. • Message: 2110: Read error on HDD0 (Main HDD) Solution: The hard disk is not working. Have the hard disk serviced. • Message: 2200: Machine Type and Serial Number are invalid. Solution: POST warning message in case MTMSN is not set correctly. Have the computer serviced. • Message: 2201: Machine UUID is invalid. Solution: POST warning message in case UUID is not set correctly. Have the computer serviced. • Message: Fan error Solution: Cooling fan has failed. Have the computer serviced. • Message: EMM386 Not Installed - Unable to Set Page Frame Base Address. Solution: Edit C:\CONFIG.SYS and change a line from device = C:\WINDOWS\EMM386.EXE RAM to device = C:\WINDOWS\EMM386.EXE NOEMS and save this file. • Message: Thermal sensing error Solution: The thermal sensor is not functioning correctly. Have the computer serviced. • Message: System memory has been removed. Solution: System memory has been removed. Press Esc to normal boot. Errors without messages • Problem: My screen keeps blanking when I do not want it to. Solution: You can disable any system timers, such as the LCD turn-off timer or the blank timer 1. Start Power Manager. 2. Click the Power plan tab (in Windows XP, Power scheme), and then select Maximum Performance from the predefined power plans (in Windows XP, Power scheme). • Problem: When I turn on the machine, nothing appears on the screen and the machine does not beep while starting up. Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the power switch for 4 seconds or more. Turn it on and listen again. Solution: Make sure that: - The ac power adapter is connected to the computer and the power cord is plugged into a working electrical outlet. - The computer is turned on. (Turn the power switch on again for confirmation.) If a power-on password is set: - Press any key to display the prompt for the power-on password. If the brightness level of the screen is low, increase it by pressing the Fn+Home. - Type the correct password and press Enter (refer to Power-on password). If these items are properly set, and the screen remains blank, have the computer serviced. • Problem: When I turn on the machine, only a white cursor appears on a blank screen. 126 User Guide