Originally Posted by kennn

Vista Freeze randomly with the following errors in event viewer:

9/11/2011 11:49 Service Control Manager Eventlog Provider 7023
The Superfetch service terminated with the following error: The system cannot find the file specified.

9/11/2011 11:48 Microsoft Antimalware 3002
Microsoft Antimalware Real-Time Protection feature has encountered an error and failed.
Feature: Behavior Monitoring
Error Code: 0x80004005
Error description: Unspecified error
Reason: The filter driver requires an up-to-date engine in order to function. You must install the latest definition updates in order to enable real-time protection.

9/11/2011 11:48 Service Control Manager Eventlog Provider 7026
The following boot-start or system-start driver(s) failed to load: i8042prt

9/11/2011 11:48 WMI 10
Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected.

9/11/2011 11:48 HttpEvent 15016
Unable to initialize the security package Kerberos for server side authentication. The data field contains the error number.

9/11/2011 11:48 volmgr 46
Crash dump initialization failed!

9/11/2011 11:48 volmgr 46
Crash dump initialization failed!

9/11/2011 11:48 EventLog 6008
The previous system shutdown at 11:46:05 AM on 9/11/2011 was unexpected.


It also appears that superfetch has stopped and cant enable.
Any suggestions

Superfetch is a non-essential service add on for intel readyboost, if you do not use readyboost with a USB flash drive then you don't necessarily need that service running, however, the freeze isn't caused by this, that is after the reboot, if you could post what was before that time, that'll be good and possibly fill in the specs for your computer to further assist you.