Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am experiencing a problem: Windows Vista completely freezes/locks up lately... It happened today twice - the mouse and keyboard stopped responding and I had to re-boot.

I checked the Application Events Log and I see these two errors: 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.

and then

The following boot-start or system-start driver(s) failed to load: SASDIFSV SASKUTIL

I checked Help online and it points to and suggests Updating the drivers.

I'm not sure why would I have problem with drivers and if so, how can I find out which drivers to update?

Can you please help me?

share|improve this question

migrated from Dec 15 '09 at 9:30

This question came from our site for system and network administrators.

Did you by chance recently install anti-virus software? And if so did the problems begin shortly after? – Dave Holland Dec 15 '09 at 3:15
Hi, I installed AVG 9 (upgraded to latest version) about month or a bit more ago Yesterday I switched to Microsoft Essentials (uninstalled AVG) - it found 3 Trojans - not sure why AVG didn't pick it up Anyway, do you think it may be related? One more thing - every time after I re-boot this way I have to re-enter my passwords to my common sites in IE – Naomi Dec 15 '09 at 3:30
Yes, forgot another thing, which may be related Sometimes when I'm typing an answer in one of the forums, in the middle of the phrase I hear a strange noise and I can not type anymore, I have to click, in order to continue typing – Naomi Dec 15 '09 at 3:31
Do I get modded down if I answer "this is by design"? – Matt Simmons Dec 15 '09 at 3:38
Not sure what do you mean? I don't think locking up Windows is "by design" – Naomi Dec 15 '09 at 3:49

I used instructions from - the time will tell if it will help with the problem

share|improve this answer
I actually wanted to add this as a comment - but didn't see the comment option. Not sure how to change it into the comment status. – Naomi Dec 15 '09 at 17:37
You can't comment with less than 50 rep. Besides, this is an answer. Why should it be a comment? – Macha Dec 15 '09 at 19:55
You should associate your accounts in your user parameters, to regain ownership over the question. – Gnoupi Jan 14 '10 at 21:44

Check Problem Reports and Solutions

Start -> Problem Reports and Solutions

alt text

See if Windows recognizes there is a problem, can tell you what is causing it, and maybe if there is a solution.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.