Hi,
A PC I have is freezing up after running for a while. I have the case cover off and it is pretty clean so I do not think heat. It only happens while there is a network card installed. I have swapped out the card with a different brand and it still freezes. I have replaced the ram with new sticks and it freezes. I have uninstalled networking components including resetting TCP/IP. Still Freeze. No set time to freezing . I will leave it running for a while and when I look again, frozen.