The system I am working on is a Sony Vaio Laptop, VPCF126FM. Its a few years old. Win Home Prem SP1x64.
An interesting note is that the system originally did not have GeForce Experience on it or the 3 extra graphics packages (physx ..etc). The system also initially ran fine with its pre 200 version driver for some time. So I highly suspect either dying hardware or an update to windows creating an incompatibility with the drivers.
Currently, eventvwr notes that "nvlddmkm" is the driver crashing. At boot up during the VAIO / Windows screens, I would see dozens of horizontal red lines. These disappeared for a short while after cleaning, but intermittently reappear.
The reason (I suspect) the 'Windows Classic Mode' would likely work, is because according to the Windows Aero wiki, "Desktop Window Manager was introduced to achieve hardware acceleration, transferring the duty of UI rendering from CPU to graphic subsystem".
I noticed that cleaning out the physical laptop helped a lot. I also noticed my max temps dropped about 10 degrees. However, the CPU never peaked above about 70 and the GPU 80 even before cleaning. I may need a new heatsink paste.
-DirectX update (2007 to present), no effect.
-Graphics update (189? to 341.44) had no effect.
-Java Update, no effect.
-BIOS, was already up to date.
-A few mentioned Nvidia audio drivers might be interfering. (Audio should be bus 0 I believe) [Why is my graphics driver installing audio drivers I dont need.. what??]
-Afterburner, -100 on both clocks, no effect.
-BCDedit cmd no effect. (bcdedit /set useplatformclock true, its normally enabled by default though). [bcdedit can be a dangerous command, not to be used if you dont know what youre doing]
-Internet Options, Adv Tab, Software instead of GPU rendering, no effect. (That no effect surprised me a bit).
-Nvidia Control Panel, Set PhysX Config, set it to the GPU instead of Auto. No effect.
--http://support.microsoft.com/kb/2685811 (Not installed on this system )
OCCT tests cause massive crashes only during the DX11 test. DX9 has NO issues.
CPU and PSU tests all come back fine.
DX11 tends to draw more power and thus heat, so it makes it difficult to test if overheating is the true cause. Running basic youTube videos can crash the PC though.
Interestingly enough. The bios options on this particular system are almost nonexistent in every regard short of a simple password. I (hope) that means everything is automated and pre adjusted to be as functional and long lasting as the pyramids. However, it also means I cant force the usage of a particular video card..etc.
Connecting an external monitor doesn't show anything until windows loads, so I cannot confirm they appear at boot on an external monitor.
-I've seen some posts that blame over/under clocking and inadequate voltage.
-I tried a reg tweak with TdrLevel and TdrDelay.. the PC only locked up occasionally after that instead of crashing. Removed the edits.
I realized after posting this (unfortunately), that I necroed an old thread. Though it was surprisingly relevant and had very similar version numbers. Hopefully someone has found a fix by now?
