I have some good news for any folks still struggling with Blue Sceen crashes with their HP I7 machines that us the Pegatron IPMTB-TK (alias Truckee-UL8E 1.04) motherboards. I've live with these constant crashes since day one as stated in my previous post. HP refuses to change the motherboard, stating that the machine passes their diagnostics. All I can say is that their diagnostics are poor and don't do CPU load testing. I believe that the problem is due to a poor motherboard power management design and/or motherboard PC layout. The motherboard can't handle any CPU load variation that forces core parking. I was able to prove this by turning off core parking. It eliminated all crashes and finally make the machine stable. All that I had to do was make a simple registry edit that prevents core parking.
With 100% core parking allowed (the Windows 7 default) my HP Pavilion Elite e9180t machine crashed ( with BSOD) whenever anything caused any significant CPU load variation (also know as high rep. rate). Something as simple as going on Facebook with IE and playing one of their mindless games would cause a certain crash within a half-hour or so. Turning core parking to 0% in the registry eliminated all crashes. My machine has been crash free since I made the registry edit. Many BIOS's settings allow turning off Speedstep and Turbo which should have the same effect, but the Truckee-UL8E has no power management settings at all. Fortunately, a Win 7 regestry Key edit does the same thing.
Check out the following link:
http://forum.cakewalk.com/tm.aspx?m=1861804
---------------------------------------------------------------
Above link provides the following simple instructions on turning-off Win 7 Core Parking:
"In short, here is the better method from sky60234:-
- Go to Regedit
- Find this key:- " 0cc5b647-c1df-4637-891a-dec35c318583 "
- Within this key, there is a value called: " ValueMax "
- This value represents the % number of cores the system will park - the default 100% ie: all Cores are potentially park-able
- Change the value from 64 to 0 so the " ValueMin " and " ValueMax " are both zero
- You will have to find the key a few times and repeat the process for each time it is found - the number of instances will depend on the number of power profiles in your system [ in my DAW it was only found twice ]
- Do a full shutdown and power-off and cold-re-start
------------------------------------------------------------------------
Now my machine is stable... no thanks to HP. The extra heating from turning-off the core parking is insigificant. The core temperatures stay around 40C. It just sucks up a little more power...not green as HP advertizes. I hope this works for others and proves to HP that it is a motherboard issue...