After installing my new graphic card and testing it for a few minutes, the PC always rebooted.

First thing was to run some stress-tests to verify if it was the GPU. I used FurMark for this. It even includes a simple utility to see your GPU stats (like temperature).

And I could verify the issue. Always when reaching 69° GPU temperature, the PC rebooted. Since GPUs should work with temperatures above 80° or even 90°, this seemed to be a hardware issue. It seems like the sensor was broken and showed lower temperatures, so in reality the GPU temperature was much higher but since the sensor reported lower temperatures, the coolers didn’t run fast enough to cool the GPU down and after some point, the maximum GPU temperature was reached and it shut down.

After getting a replacement card, it finally worked without crashing and I’m now able to enjoy fancy new graphics.

I finally assembled my new home-made pc and during setup, I had various freezes when installing certain drivers like the Intel LAN or Logitech Gaming Software. In fact, I could not install those drivers at all.

After a lot of googling I found quite some people having the same problem and solving it with unplugging the DVD/Bluray from the ASMedia Sata3 port.

In fact, the same happened to me. After plugging it in into an Intel Sata3 port everything worked great. Afterwards, I installed the ASMedia Sata drivers, this might have also helped but I could not verify this yet.

So in case you have freezes in Windows, try installing ASMedia Sata drivers or just don’t use the ASMedia Sata ports at all (especially for optical drives).

Just for completeness my system stats:

• Intel Core i7 4790K BOX
• ASUS Z97-DELUXE
• 16GB Corsair Vengeance Pro
• Samsung 850 Pro (256GB)
• WD Green (3000GB)
• ASUS GTX-970 STRIX
• Microsoft Windows 8.1 Pro 64bit

Phew, that one took a while to finally figure out.

Here’s how I could succeed in doing this:

• Shutdown the Virtual Machine
• Increase the size of the HD: VBoxManage.exe modifyhd <absolute path to file> --resize <new total size in MB>
• Download the gparted iso, mount it in your VM, start it from this iso
• Increase the partition in gparted (you might need to adjust the “outer” partition as well)
• Reboot and remove the gparted iso
• Extend the logical volume: sudo lvextend -L30G /dev/mapper/your-partition-name-root
• Resize the filesystem: sudo resize2fs /dev/your-partition-name/root
• Check that everything worked: sudo lsblk