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Laptop Monitor Not Working External Fine

Discussion in 'Windows XP' started by Bailiwick, Aug 12, 2013.

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  1. Bailiwick

    Bailiwick Thread Starter

    Oct 26, 2009
    Hi - Using IBM T42 with External Monitor. When booting Win XP Home SP3, both monitors work, then laptop monitor goes blank. External monitor works fine. I have tried everything I can think of - resetting displays, changing ATI Radeon mobility 7500 driver, disconnecting external monitor, Function key combinations, booting in safe mode. Nothing works. But when the laptop boot starts, the laptop monitor works for a few minutes then shuts down. Seems like a switch is not working properly.
    Any ideas as to how to solve this problem. And the laptop monitor was working fine until a few days ago, the last time I used it alone, i.e., separate from the external monitor.

    Many thanks in advance.


    Jan 30, 2007
    First Name:
    Being that the ibm t42thinkpad is an older model its very possible that the whole screen will need replaced as the ribbon cable, inverters, or backlights might have gone bad.replacing the whole screen might be easier to do than trying to find the individual parts needed.
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