Hi,
I have this problem which drives me mad for some time already. Hope you know more than I. (And sorry for my imperfect English.)
I was using my laptop Lenovo T61 (1440x900) with an external monitor Dell 2209WA (1680x1050) and everything worked just fine - all the combination of primary/secondary screen, only external, only laptop's monitor, both the same picture, or a wide screen over the two monitors.
Suddenly, this problem appeared. Laptop's monitor does not show any picture in 90% of cases. Sometimes it works fine, but just occasionally. Usually it shows neither the first bios splash after turning on, nor Windows 7 running afterward. On the other hand, external monitor works always - sometimes omitting the splash screen but always showing Windows running.
I read a lot already. Back light seems ok, inverter too - as I said, the monitor is working sometimes. And even when it is not, I can seen it is on. I tried BIOS update, without success. Then in BIOS, I checked the display options and could see that it is set to External VGA, so I changed it to Thinkpad LCD, restarted but the External VGA is there again.
In Windows, I installed the newest drivers for Nvidia Quadro NVS 140M, installed the driver for laptop's display, without success. On FN+F7, it is switching, but only from "only external" to "only external" - I can see it switching but nothing changes. Screen settings in Windows is correctly detecting the external screen, but for the laptop's screen most options are disabled. Before installing drivers it said it was a non-pnp monitor. Now it says it is a "mobile PC display".
Hope I wrote everything necessary. Please help.
Martin
I have this problem which drives me mad for some time already. Hope you know more than I. (And sorry for my imperfect English.)
I was using my laptop Lenovo T61 (1440x900) with an external monitor Dell 2209WA (1680x1050) and everything worked just fine - all the combination of primary/secondary screen, only external, only laptop's monitor, both the same picture, or a wide screen over the two monitors.
Suddenly, this problem appeared. Laptop's monitor does not show any picture in 90% of cases. Sometimes it works fine, but just occasionally. Usually it shows neither the first bios splash after turning on, nor Windows 7 running afterward. On the other hand, external monitor works always - sometimes omitting the splash screen but always showing Windows running.
I read a lot already. Back light seems ok, inverter too - as I said, the monitor is working sometimes. And even when it is not, I can seen it is on. I tried BIOS update, without success. Then in BIOS, I checked the display options and could see that it is set to External VGA, so I changed it to Thinkpad LCD, restarted but the External VGA is there again.
In Windows, I installed the newest drivers for Nvidia Quadro NVS 140M, installed the driver for laptop's display, without success. On FN+F7, it is switching, but only from "only external" to "only external" - I can see it switching but nothing changes. Screen settings in Windows is correctly detecting the external screen, but for the laptop's screen most options are disabled. Before installing drivers it said it was a non-pnp monitor. Now it says it is a "mobile PC display".
Hope I wrote everything necessary. Please help.
Martin