Problem with displaying on external monitor

[icecold1001]

I have a T43 with Intel Express Chip, model no. 1872-BA2. Recently, I have this issue of not able to display on an external monitor. Just upgraded to Win 7 but I am quite certain the external display was still okay after upgrade.

Can anyone advise what could be causing the problem? Win 7 or display port? How I can check whether the port is the problem? Lastly, do I need to change the whole MB if port is faulty?

Hope someone can help me as the problem has been bugging me for some time and I need to use external display in my line of work.

Thanks

[Harryc]

Boot up a Linux Live CD. Does it still fail?

[icecold1001]

Not familiar with Linux, how should I go about doing that?

[icecold1001]

Not familiar with Linux, how should I go about doing that?

Ok, I found that out through Google. Will try that and see how. Thanks for the advice.

[tfflivemb2]

Not sure if it is the same with newer Thinkpads, but older Thinkpads required hooking up the external monitor prior to booting the machine.