Sony laptop Keyboard errors - some keys aren't working

Question :

I have a Sony VAIO laptop VPCEA4S1E running Windows 7 Home Premium (64bits).

Since a couple of days I have a strange keyboard problem: some keys (1, 3, 5, 7, 8, 9, p, Backspace, F1, F3, F5, F7, F8, F10, F12) are not working as expected.

I have installed the tool ShowOff to display every keystroke.

Pressing the following keys results in some different (series of)keystrokes:

1 -> F1 1 F1

3 -> F3 3 F3

5 -> F5 5 F5

7 -> F7 7 F7

8 -> F8 8 F8

9 -> F10 9 F10

p -> F12 p F12

Backspace -> Backspace Insert Numpadlk

F1 -> F1 1 F1

F3 -> F3 3 F3

F5 -> F5 5 F5

F7 -> F7 7 F7

F8 -> F8 8 F8

F10 -> F10 9 F10

F12 -> F12 p F12

I tried uninstalling/reinstalling the keyboard in device manager.

I tried booting in safe mode.

I reinstalled SONY drivers.

I did a system restore before the day that this problem came up.

Nothing solves my problem.

Virtual onscreen keyboard is working fine.

Has anybody any further suggestions? Thanks!

Solution :

The model #VPCEA4S1E doesn’t belong to the U.S. I have provided all general information below.

Recheck if you have performed all steps from the link:

http://www.kb.sony.com/selfservice/documentLink.do?externalId=C129021

If the issue persists, contact Sony service team. For information on how to contact a Sony facility in another country please visit the following site.

http://www.sony.co.uk/section/contact

http://www.sony.co.uk/discussions/community/en/support

Q :

Sony technical support has replaced my keyboard.

Problem solved!

A :

Hello,

That’s great!! I'm glad that the issue was resolved.

VPCEA4S1E is a European model. If you need any assistance you can contact Sony facility from the following links:

http://www.sony.co.uk/section/contact

http://www.sony.co.uk/discussions/community/en/support