I have a Sony Viao SVS151A11L running window 7 Home Premium where the touchpad and Keyboard only work in screens before windows loads (pressing F8 at starts).
I have tried starting in safe mode and once windows loads, the keyboard and touchpad stop responding. Function, brightness, backlighting for the keyboard and a few other keys work, but most do not.
I have done a system restore to a time that it worked and still have the issue.
I have run startup repair and windows memory diagnostics with no results.
External mice and keyboards give no different results.
No new hardware or software was installed or removed.
What could be causing this issue?
Any help would be appreciated.
Thanks!