The internet stops working after connecting a second monitor.
The internet stops working after connecting a second monitor.
It simply indicates the display has weak protection against strong electromagnetic interference from nearby noisy parts. However, it won't produce enough radio frequency radiation to cause harm.
It seems your stance has shifted. For the monitor to disrupt Wi-Fi significantly, it’s unlikely the EMI alone could cause such effects without other factors. I’m suggesting we focus on practical fixes first—check the cabling and motherboard connections, see if the GPU is handling the extra load, and investigate any Ethernet-HDMI conflicts. Start by swapping out the HDMI cable and testing with a different port. If that doesn’t help, move to the network setup and consider contacting support or returning for a replacement.
I changed the HDMI cables and it didn’t fix the issue, but using a DVI adapter instead helped. My friend mentioned possible EMI leaks, but I’m still unsure. HDMI to DVI is now functioning. I plan to take apart my setup tomorrow and clean it to see if that resolves the problem. Thanks for the advice!