Lenovo ThinkPad R50 English - Service and troubleshooting guide for ThinkPad R - Page 28
A password problem, Problem, Solution, Screen expansion
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Solving computer problems Problem: When I turn on the machine, nothing appears on the screen, but I hear two or more beeps. Solution: Make sure that the memory card is installed correctly. If it is, but the screen is still blank, and you hear five beeps, have the computer serviced. If you hear 4 cycles of 4 beeps each, the Security Chip has a problem. Have the computer serviced. Problem: When I turn on the machine, only a white pointer appears on a blank screen. Solution: Reinstall your operating system, and turn on the computer. If you still see only the pointer on the screen, have the computer serviced. Problem: My screen goes blank while the computer is on. Solution Your screen saver or power management may be enabled. Do one of the following to exit from the screen saver or to resume from standby or hibernation mode: v Touch the TrackPoint or the touch pad. v Press a key. v Press the power switch Problem: The DOS full-screen looks smaller. Solution: If you use a DOS application that supports only 640×480 resolution (VGA mode), the screen image might look slightly distorted or appear smaller than the display size. This is to maintain compatibility with other DOS applications. To expand the screen image to the same size as the actual screen, start the ThinkPad Configuration Program and click LCD; then select the Screen expansion function. (The image might still look slightly distorted.) A password problem Problem: I forgot my password. Solution: If you forgot your power-on password, you must take your computer to an IBM authorized servicer or marketing representative to have the password canceled. 18 ThinkPad® R50 Series Service and Troubleshooting Guide