03-23-2008 09:53 PM
03-26-2008 12:08 AM
03-26-2008 03:01 PM
03-26-2008 03:24 PM - edited 03-28-2008 12:08 AM
04-02-2008 06:04 PM
04-03-2008 01:42 PM - edited 04-03-2008 05:17 PM
10-23-2008 03:04 AM
I'm not sure if it has anything to do with the touchpad sensitivity. I decreased the senstivity under the Synaptics settings (the one which has to do exactly with this error....I.e. reduce sensitivity while typing), but this 'jumping around' error still occurs. I tried upgarding the drivers and then came back to the original drivers sent out from Lenovo, and this still happens. I haven't been able to find a solution, so I figure this is just an error with the Lenovo laptops. What I do now is after I start typing, I move the mouse cursor to the furthest edge of the screen so if this 'jumping' error happens, I don't accidently lose a bunch of the material that I've typed. That's a work-around solution I suppose.
04-14-2010 05:52 AM
I've had the problem. This fixed it for me. Go to Control Panel (I have Vista - go to Control panel, Classic View)
Mouse Icon or Mouse properites.
Click on Pointer Options and uncheck or clear the box that says "Enhance pointer precision."
Then click "Apply"
and then OK.
This worked for me. If you still have the problem, I refer you to other to other answers in the thread here.
06-15-2010 02:28 PM - edited 06-15-2010 02:38 PM
The same thing happens with my T500 running Windows 7. Lenovo sent me a new keyboard and I installed it but it did nothing to correct this annoying problem. Anyone have any more suggestions?
Deselecting "Enhance Pointer precision" did not solve the problem.
11-13-2013 03:21 PM
This behavior started recently on my T420 with Windows 7 64 bit. It's been very frustrating since it's intermittent, although getting worse. Also occurred after updates, don't know whether it was a ThinkVantage update or a Windows update - I do both frequently so not sure which one did it . . . or even for sure if it's related to any update at all. Some internet forums suggest it is a design flaw which causes the notebook frame to exert pressure on the touchpad.
I've played with all the touchpad/pointer settings without any effect. What did work better than anything else so far is a free utility called "Touchfreeze" which helped a lot but there are still instances when it occurs when typing within a text box such as this one I'm typing in now. I'm using my T400 to type this. The T420 is only marginally useful until I get to the bottom of this. Not only does the cursor/pointer jump around the screen and interrupt text writing, it also jumps around and selects random things like ads and various non-sensical options almost like there's a ghost in the machine fighting me for control. Very irritating!
I've run the Windows Scanner, my NOD32 scanner, cleaned my system and re-booted many times, all to no avail. I've got all the latest drivers and updates, although I haven't done anything with the BIOS that I can recall.
Anyone have any new thoughts about this problem?