If the keyboard does not respond or the response to keystrokes is delayed, check to make sure that none of the accessibility options for the keyboard have been enabled , such as sticky keys, filter keys and toggle keys.
- All accessibility options should be unchecked.
- These options could have been enabled unintentionally by holding down the SHIFT key for 8 seconds or more.
If the issue continues, follow these steps to continue troubleshooting the issue.
NOTE: Because several of these steps represents a possible solution to this issue, if at any point the keyboard responds normally you will not need to continue troubleshooting.
- On the keyboard, simultaneously press the Ctrl+Shift+Esc keys.
- In the Windows Task Manager window, click the Performance tab.
- On the Performance tab, in the CPU Usage section, if the usage indicator is above 50% then a program or process is running that is causing the delay in keystroke response.
NOTE: If this is the case, close all of the programs you have running and test the keyboard response again.
- If the keystroke response is still slow, restart the computer and test the keyboard response again.
- If the keystroke response remains slow, restart the computer again and this time as it is restarting, at the black VAIO screen, tap the F8 key.
- At the Advanced Boot Options screen, use the arrow keys to highlight the Safe Mode with Network option, and then press the Enter key.
- Once the computer has completely started, click the Start button, click All Programs, click Accessories, and then click Notepad (or comparable text authoring software).
- In the Notepad window, begin typing to test if the keyboard is responding slow.
- If the keyboard responds normally then some 3rd party software was causing the delay in keystroke response. Try uninstalling any recently installed software to see if that resolves the issue.
- If the keyboard continues to respond slowly even in safe mode, then the issue is in the registry. Perform a System Restore to return the computer back to an earlier date when the issue was not present.
- If still present after a System Restore, then a Full Format and Recovery will be necessary.