HDMI-out stopped working, Win x64, Radeon HD 3200

Up until the other day, I've been using my MSI Wind u230 netbook / Radeon HD 3200 to output to my monitor (Acer S243HL - only has 1x DVI and 2x HDMI inputs) and then occasionally swap to a Westinghouse 32" TV.

The other day: I was using my monitor then swapped to the tv, and then returned to my room to connect to the monitor and it just won't work. (To note, I've been using Win key + P to set projector only and to disconnect projector before unplugging the HDMI cable.)

The netbook screen will turn itself off (as if it detects the HDMI-out) but the screen or TV will just show "No signal."

I tried a shorter HDMI cable, tried the other input on the monitor, still nothing. Strangely enough, checking the displays in Catalyst or the Screen Resolution properties, it can detect both the TV and the monitor. There's just no signal coming out.

Even stranger: trying to connect another laptop to the monitor (which used to work) displays "No signal" too.

Now I'm confused. Could it be a software issue? Could I have broken an HDMI port somewhere that somehow broke the other two HDMI cables in turn? Help?

Hey James, thanks for the reply. To be honest, (and I know it's a bit silly, but some computer problems are like that) I still have a vague suspicion that a port (laptop's/TV's/monitor's) might be breaking pins or something in the cables, so I didn't want to try and plug in the PS3's HDMI cable in there.

However, the monitor has two HDMI inputs, tried plugging in to both, still no signal.

Again, I'm afraid of trying to plug in the PS3's HDMI port in the monitor for fear that the port may break it.

The part that bothers me is now HDMI-out won't work with my monitor. (Tried with netbook, then laptop. I don't have another HDMI cable to test.)

Is it possible that a broken HDMI port can break HDMI cables that you connect to it, then in turn, break other HDMI ports you use that cable to?

Thanks for the reply! No updates, no changes in anything. This has been my setup forever. I use the monitor for things like word processing, spreadsheets, then connect to TV's HDMI for videos or YouTube.

The other laptop has never been able to HDMI-out to the TV, so that's normal. What's strange is now even that won't send out a signal to the monitor. (The monitor works with the other laptop flawlessly before.) Which has led me to the slightly-improbable scenario of an HDMI-port somewhere in my setup breaking cables that connect to it, or whatever the cable is used for later on. Pulling hairs.

I tried to check if it was a driver issue by updating my Catalyst drivers on the netbook, but not on the other laptop. Still nothing. And, like I said, it was working fine even before with the older drivers.

Is it possible for an HDMI port to short out?