I had this problem. Laptop has been running for 24 hours and not a problem :-)
>Once on the website, select the Aspire 5535
>Then use the drop down and select "Bios Update for Vista" and select v1.04
>Once download is complete, extract to a temporary folder (eg create a folder in program files and extract there).
>Once this is down, go to the folder and open:
Ensure all other applications are closed.
>then run the CP2A_104 application.
Let this complete, the system then should reboot.
Once your back on, you should be good to go. This is a reminder, this may not work on all systems but it did on mine. You do this at your own risk and I accept no responsibility for any problems occured. If in doubt, refer to the Acer support line.
I wish you all the best as I know how much of a pain in the arse this problem is.