07-28-2013 01:10 AM
I have a Lenovo Z500 (i5, 3210M, 6GB RAM, Windows 8) and from time to time the laptop will behave as if the "ctrl" key is pushed down. For example, when pressing "S" it will bring up the save dialogue and when clicking on internet links it will bring up the page in a new tab.
This is my second Z500, after returning the first one with the same problem.
I don't think it is a mechanical issue with the keys. The drivers seem to be up to date and I can confirm that sticky keys and other accessibility options are deactivated.
Does anyone have any ideas?
Solved! Go to Solution.
08-02-2013 10:48 AM
To isolate a Hardware issue of the keyboard
Try launching the onscreen Keyboard
and try recreating the issue,
Watch the onscreen keyboard as it will change the color of the button if the actual key is pressed or held down.
With this youll know if the CTRL key is stuck or malfunctioning.
if verified you can call Lenovo Technical Support for Assistance.
10-09-2013 03:24 PM
But this doesn't solve the problem. I had exactly the same issue with my new Z500. For unknown reasons, the Ctrl key behaves frequently as if it's pressed down (but in fact I didn't do anything about it). It could happen anytime, anywhere, e.g., in the middle of my typing, I suddenly couldn't enter the letters at all, instead all the things I entered behaves as if it's combined with the Ctrl key pressed down. Another example is, when I scroll my wheel button on the mouse, it suddently behaves to zoom in/out the page instead of scrolling down/up the page, a behavior that only happens when you press the Ctrl key with it. In order to get rid of this situation, I have to press Ctrl key to get everything back to normal. I did turn on my On-screen Keyboard and watched it when this happen -- but the On-screen keyboard doesn't show the Ctrl key change at all.
This is mysterious but quite annoying.
Is it a hardware issue and should I update some drivers about it?
10-09-2013 10:02 PM
Hi Minus 5,
I managed to solve this problem a few weeks ago using a solution I found on an ASUS laptop forum.
Bring up the Control Panel and click on Hardware and Sound and then on Device Manager. Next click on Keyboards and then double click on Standard PS/2 Keyboard. Click on the Driver tab and then Uninstall.
This uninstalls the keyboard driver and upon restarting your laptop, Windows will be forced to automatically reinstall a new keyboard driver.
This solution seems to have worked for me as I haven't encountered the issue since.
If you still have problems, I read somewhere that the Bluetooth driver can interfere with things so you could try reinstalling that too.
Hope this helps.
10-12-2013 12:18 PM
I did as what you instructed. The laptop did ask for restart, but after I restarted it, there's no process showing the new driver is being installed (or maybe it's installed backend?) Then I went to the Device Manager and see that the driver seems to have the same version as it originally had (for me, it's a 2006 version). Did it already get reinstalled as what you expected?
10-13-2013 01:57 AM
I think for me the driver installed behind the scenes upon restart and looks to be the same version as was originally there; but I have not had the problem since.
Are you still having the issue?
10-17-2013 09:27 AM
Unfortunately, I still have the issue.
I delete the two keyboard drivers from the device manager. But whenever I log in again, the two drivers stay there as they were - So I don't know if I really did delete them or they were re-installed.
I repeated this process several times but the problem still exists.
10-18-2013 01:33 PM
It seems the problem is solved--
I upgraded my OS to Windows 8.1 yesterday. One "side effect" was that the touchboard manager is gone (originally, there should be a touchboard icon in the Notification Area, but not there isn't). Surprisingly, I found the keyboard worked properly ever since then. It may tell that this is a problem caused by touchboard driver.