Lenovo ThinkPad W700ds (English) Service and Troubleshooting Guide - Page 30
Sleep standby or hibernation problems - external monitor
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Sleep (standby) or hibernation problems Problem: The computer enters sleep (standby) mode (the sleep/standby indicator turns on) immediately after Power-on self-test (POST). Solution: 1. Make sure that: v The battery is charged. v The operating temperature is within the acceptable range. See "Specifications" on page 66. 2. If these items are correct, have the computer serviced. Problem: The critical low-battery error message is displayed, and the computer immediately turns off. Solution: The battery power is getting low. Do either of the following: v Connect the AC adapter to the computer and plug it into an electrical outlet. v Replace the battery with a fully charged one. Problem: When you take action to return from sleep (standby) mode, the computer display remains blank. Solution: 1. Check whether an external monitor was turned off while the computer was in sleep (standby) mode. 2. Do either of the following: v Turn on the external monitor to display the image on it. v Press Fn+F7 to bring up the image on the computer screen. Note: If you use the Fn+F7 key combination to apply a presentation scheme, press Fn+F7 at least three times in three seconds. 3. If the problem persists, do the Solution in the following Problem. 22 ThinkPad® W700 and W700ds Service and Troubleshooting Guide