IBM T30 mouse buttons change function

This one is very perplexing...
IBM T30  2366-97U

The left click button on both the red keys under the space bar, and on the buttons below the touch pad...does NOT double click...and when clicked it brings up the context menu of the right click...

The right click does not work at all...

Here is the kicker...an external mouse works perfectly...

If I start up the computer with the external mouse attached, and use it for a couple minutes, then disconnect the external mouse, the keyboard mouse click buttons will work correctly...

But if I start the comptuer up WITHOUT the external mouse attached, the keyboard mouse buttons will NOTwork correctly...they will work as described above...

I have gone thru 2 brand new keyboards...

Rebuilt the machine, fresh install of XP pro...

Downloaded all drivers directly from Lenovo site, installed...and for a while the keyboard mouse buttons did work correctly...thought I had the problem fixed...but after about 10 minutes or so...they stopped working...I plug in the external mouse and it works just fine...use it for a few minutes, unplug it, and the keyboard mouse buttons will work fine...

I am ready to ship it to Lenovo for a new systemboard...unless someone has seen this before and knows how to fix it...

Thanx
LVL 2
Steve MutchlerIT TechAsked:
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Irwin SantosComputer Integration SpecialistCommented:
updated the BIOS?

applied the latest dirvers for you touch pad?
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CallandorCommented:
The dependence on an external keyboard being plugged in at some time indicates to me that it's a hardware problem.  A fresh install of XP rules out the driver, so it sounds like you are on the right track.
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Steve MutchlerIT TechAuthor Commented:
Yes....I updated the BOIS...and I got the latest drivers from Lenovo and installed them...latest drivers on EVERYTHING...


And...it is NOT an external keyboard I am using...it is an external MOUSE only...
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CallandorCommented:
Sorry - I meant an external mouse.
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Gary CaseRetiredCommented:
"...unless someone has seen this before and knows how to fix it... " ==> seems fairly apparent that this is not the case :-)      You're obviously tried all the "usual suspects" here before posting the question.   I'd only add two thoughts:  (1)  Have you double-checked the BIOS for any settings related to the pointing device and/or USB support?   In particular, be sure "legacy USB support" is enabled if that's an option in the BIOS.   (2)  did you run a thorough memory test (e.g. MemTest-86+ from http://www.memtest.org/)?   If not, I'd run that for an hour or so.

... I don't disagree that it may be hardware;  BUT the occasionally-correct functionality; and the ability to restore it to that "at will" (by plugging in an external device) doesn't particularly support that conclusion ==> it makes it sound more like a driver-gone-bad.   Since the device works perfectly at times, it's not a simple case of a bad contact or failed switch.   Are there any thermal considerations to this problem that you've noticed? ... i.e. if you use the laptop with the A/C adapter plugged in, but the battery removed, is the behavior the same?
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Steve MutchlerIT TechAuthor Commented:
Good thoughts Gary...

I have been rebuilding this machine and upgraded the RAM...removed a 256 chip in put in a 512...that is new RAM...and the issue with the switching mouse keys, I believe, was happenning before the RAM upgrade...

I'v gone thru BIOS...nothing there seems to out of place...made a few changes to see if that would help...but no joy...

I really thing I need to replace the systemboard...
I'll close this post and split the points out...call Lenovo and get it setup for a replacement...

I guess I really didn't expect the problem to get resolved here...but I have learned on EE there is such wide and deep
amount of experience...I thought maybe there was a chance...

thanx for the help
Steve
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Irwin SantosComputer Integration SpecialistCommented:
cool. thank you!
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Gary CaseRetiredCommented:
Agree if the issue happened with two different sets of RAM that pretty much excludes memory.  And there's certainly always a chance someone will have seen the same issue -- the problem is you often get "stabs in the dark" that you have to weed through to see if anyone's really seen it before.   An unfortunate number of posts here don't really support the name of the forum -- "Experts" Exchange :-)
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Steve MutchlerIT TechAuthor Commented:
Gary...what you say is true...

However in 3 years of being on this forum...usually asking several questions a week on an almost steady basis...I have gotten ton's and ton's of help here...sometimes it is not the specific answer, but where that answer leads me...

And I have learned that there are several folks, that when they respond to my questions...I am getting GOOD answers...you among them...

thanx
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Gary CaseRetiredCommented:
You're most welcome.
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