Currently Being ModeratedNov 15, 2012 12:20 PM (in response to acsimify)
Try some basics like inspecting the cables to see if one is worn or eaten by a critter. If they appear in good shape then check System Preferences - Displays and see if the HP is shown. If that isn't it then some other basics such as restarting Safe Mode to reset some caches, doing a SMC Reset and possibly even a PRAM reset. If you don't know how to do these Googling them will get you to the correct instructions.
Currently Being ModeratedNov 15, 2012 2:34 PM (in response to rkaufmann87)
thanks for the reply...unfortunately, I just did all of the above. I checked all connections, no external monitor appears in system preferences - displays, did a restart in safe mode, did a SMC reset and a pram reset. Still no monitor. So I unhooked mine, and tried my son's monitor - an hp 2009m. I restarted my imac and the screen on the monitor said scanning for signal, no signal found, going to sleep.
Is it possible that the adapter thing to my vga cable has gone bad. Is there a way to see if the port itself is functioning?
I was on the verge of buying a bigger external monitor, but don't want to now since I am scared it won't work.
Is anyone else having this problem???
Currently Being ModeratedNov 16, 2012 10:57 AM (in response to rkaufmann87)
You might be right. I took the adapter (which is mini display to dvi - not avg) and the dvi cable and connected them to my macbook pro and then tried 2 different external monitors. My MBP has a thunderbolt port, but from what I have read, this should have worked with the mini display port adapter because apple says thunderbolt is backward compatible. Neither of the monitors were discovered by the MBP. So I'm off to Best Buy and crossing my fingers. Thanks for the suggestion.
Currently Being ModeratedNov 18, 2012 5:07 PM (in response to rkaufmann87)
so, just to update. I ran across a thread that said to unplug the monitor. I hadn't done that through all of the other things. I had hooked the monitor up to my macbook. I had taken the cables and adapter and tried them on another monitor with my macbook, but that didn't work (I suspect because I misunderstood the backward compatibility of thunderbolt). So I unplugged the original monitor - still at my desk, reconnected all the connections, plugged it back in, and voila - everything worked like a charm. So, apparently, a monitor resets when unplugged and this did the trick!
Thanks for your input!