I have been trying to fix this one for a few days now and I am finally sending it out to the experts....
I have just upgraded a Toshiba Satellite P300 from Windows Vista Home Prem to Win 7 Pro.
As this upgrade does not allow for a straight upgrade option the initial OS had to be formatted first.
So I have started with a clean HDD install with the Win 7 Pro UPG DVD.
Every few reboots the system comes to the initial login screen (before a user profile is loaded) and the keyboard and touch pad will not respond at all and the graphics driver will not be running.
If I add a USB keyboard and mouse they will work but the local input devices will remain dead.
Upon going to device manager:
Synaptics driver is: This device cannot start (Code 10)
Radeon HD3650 is: Windows cannot initialize the device driver for this hardware (code 37)
No warnings show for the keyboard though.
Here are the only other event errors in event viewer:
ATI EEU Client event Error - Event ID:16388 Source: ATIeRecord
Display is not active - Event ID:43029 Source: atikmdag
CPLIB :: General - Invalid Parameter - Event ID:52236 Source: atikmdag
Something I have just noticed too is that the Sleep and Hibernate functions do not work either on a bad reboot.
As said before though, this does not happen on every reboot, so just when I think I have it and its ready to take to the manager it will boot incorrectly again.
I have tried just about every driver I could find on the Toshiba site for this system and I am currently using the synaptics drivers straight from the synaptics website.
I started using driver sweeper this morning to totally remove the ATI files and then install each driver again.
I currently have the following ATI Driver installed:
ATI Mobility Radeon HD 3650