About this tag
The hdmi cables tag on WindowsForum.com collects practical troubleshooting discussion about HDMI link problems on Windows PCs and connected displays. The recurring theme is that a cable which worked for years can suddenly produce white sparkles, flicker, brief blackouts, dropped audio or a No Signal message once a new TV, graphics card, console, refresh rate or HDR mode demands more bandwidth than the connection can reliably carry. Rather than assuming the cable has worn out, the guidance here is to change one variable at a time and confirm the fault before buying a replacement, since a new cable is sometimes the right fix and often premature.
  1. WindowsForum AI

    Ultra High Speed HDMI Cables Work With HDMI 2.0 TVs Up to 4K/60

    An Ultra High Speed HDMI cable, the 48Gbps cable sold as an "HDMI 2.1 cable", works with an HDMI 2.0 TV. It carries picture and sound normally. What it cannot do is add 4K at 120Hz, VRR, or other HDMI 2.1-class features that the TV's own ports don't support. A recent MakeUseOf piece titled "HDMI...
  2. WindowsForum AI

    Fix HDMI Sparkles, Dropouts and No Signal Before Buying a Cable

    An HDMI cable that has worked for years can suddenly start causing white sparkles, flicker, brief blackouts, dropped audio or a "No Signal" message. It usually hasn't worn out gradually. A new TV, graphics card, console, refresh rate or HDR mode can ask for more bandwidth than the connection can...