For some reason, whenever I get to the log-in account page after W8 boots up, there's no longer a mouse cursor. It's not just invisible either because clicking on things doesn't work (such as power button, ease of access or log-in textbox). I have to end up using tab and the arrow keys to navigate around.
I'm using a Sony Vaio S series 15 and the touchpad btw.
I wonder if this has anything to do with synaptics. Though I reinstalled with newest drivers, and that didn't make any difference. When I plug in a USB wireless mouse, the cursor appears and works, just not the touchpad.
Going to your laptop's website I found 1 driver update. Have you tried this update before ?
If not please follow the guide by unistalling original drivers first.
It excplicitly says that it cannot overwrite old drivers you have to unistall them first and then install updated driver.
Have a look here. http://esupport.sony.com/US/p/swu-download.pl?mdl=SVS15...
I assume you have windows 8 64-bit installed.
Btw did you upgrade the operating system or laptop came as is?
I was able to solve the issue with the following steps:
1. Uninstall current drivers through device manager
2. Restart with default MS drivers
3. Download & Install the stock or new Synaptics Drivers from Sony here: http://esupport.sony.com/perl/select-system.pl
4. Restart again, and you should be to use the cursor at login and see Synaptics Manager back.
I tried downloading and installing the drivers from the synaptics website, but for some reason they don't 't install correctly, and if the cursor works, you can't access Synaptics Drivers.
So its important to download the drivers through Sony's website, not through VAIO update or synaptic's website.
I had the same problem ...but sheepishly fouud the SIMPLE answer was that there was a key on my keyboard that made it work again...it was the "lock touchpad" button under F5...this was on my toshiba Satellite running windows 8...so pressing Fn+f5 did it
Same problem on desktop running Windows 8. Mouse passes POST (blinks on power up) but doesn't come on--no red light. Keyboard works.
After several reboots still the same. Unplugged the power instead of normal shutdown. Now it works. I created a new restore point in case it happens again.