Hard Lock + "screech of death"

I've been having hard locks on my system with Win7 pro 64 bit. They happen randomly, no warning, just instant lock up requiring me to hit the reset button. When the system freezes, I also get a "screeching" sound coming from my speakers. sometimes my computer will go days without locking up, other times I get 5 in one day. It can happen while browsing the web or while gaming. Nothing is overclocked, and my temps are good. I've also replaced nearly every piece of hardware in my system. Here's what I've tried:

Reinstalled windows
Reinstalled all drivers (downloaded directly from mfg website)
Ran Prime95 blend overnight with no problems
Ran memtest 3+ passes no errors
PSU rails test good
RMA'd motherboard
Tried different RAM timings, (mfg recommended, motherboard "failsafe" and everything in between)
Tried two different cpu's (x3 720 and x2 250)
Also tried swapping out video cards and hard drive.

My event log shows event ID 41 "The system has rebooted without cleanly shutting down first".
It also shows two errors which I'm not sure if they are the cause of my problem, I haven't been able to find out much about them with any searches.

Sidebyside Event ID 63 and
CAPI2 Event ID 4107

Thanks for any help.

Jonathan_King said:

Welcome!

What brand hard disk do you have? Try downloading the manufacturer's diagnostic software and scanning.

Its in my system specs, Western Digital 640gb black, seems odd that I would get the same crash with two different hard drives though.

IggyAZ said:

Take a look at this message. Seems someone had a similiar problem and was solved by zigzag3143


https://www.sevenforums.com/crashes-d...crashes-2.html


You need to go to control panel>system>advanced system settings>Performance>settings>data execution prevention.

The datat execution prevention should be on for all programs. IS it?

The event viewer event code is 1000 and source 100. that is usually a memory overflow caused by either DEP being off or a virus. Do you have a anti virus running?

Right now it is turned on for essential windows programs only, I should turn it on for all programs?

Yeah, I'm running MS Security Essentials.

I was hoping it was fixed but win7 locked up on me again today. Same as before, no warning, just instant freeze + screeching/buzzing sound from the speakers requiring me to hit the reset button. Any other ideas on what could be causing this?

I'm thinking that the CAPI2 errors might be the cause of my freezes. The time stamps in my event log seem to coincide with the freezes.

The error is CAPI2 event ID 4107:
"Failed extract of third-party root list from auto update cab at: <http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A certificate chain could not be built to a trusted root authority."

I've downloaded authrootstl.cab however when I double click it asks for an install location, anyone know where this is supposed to go?

bump back to first page