Final answer:
The least likely source of Windows 8 hanging and errors after a new video card installation is that Windows does not support the new card, as hardware compatibility with Windows is usually ensured for non-obsolete technologies.
Step-by-step explanation:
If a user complains that Windows 8 hangs a lot and gives errors after upgrading to a higher-performing PCIe video card, the least likely source of the issue would be Windows does not support the new card. Here's why the other options may cause the problem:
- Overheating could be an issue if the new card generates more heat than the previous one and there's insufficient cooling within the computer case.
- The drivers for the card need updating since new cards often require the latest drivers for best performance and stability. Out-of-date drivers can lead to system instability.
- Memory is faulty could also affect system stability, but if the issue started immediately after installing the new video card, this is less likely unless the new card stresses the system memory in a manner that previously did not exhibit the fault.
Overall, compatibility of hardware with Windows 8 is typically ensured as long as the hardware is not significantly outdated or using unsupported technology.