Mini display to hdmi adapter problem

Hi,
When I connected my mini display to hdmi adapter to hdmi, and hdmi cable to my ASUS PA238QR monitor, my early 2011 MBP 13" detects the monitor, but the monitor shows "hdmi no signal".
I tried unplugging everything, including the adapter and hdmi, but to no avail. I tried putting my computer to sleep, and waking it up, still, nothing seemed to be the cause of the problem.
I read through some old discussion on this issue, and nobody seems to have a solid solution besides purchasing another adapter.
I tried booting into win7 and still, the monitor shows "hdmi no signal".
I am 100% sure my monitor and hdmi works becuase when I used other laptops it's fine.
Thus, I'm suspecting it's the mini display to hdmi adapter's problem.
Is there a way I can make sure that my macbook pro is outputting the signal?
Any recommendation or advises are welcomed. Thanks for reading.

If you've an HDMI port on your television, you could always try that.
I've used this adapter from Monoprice successfully - not bad for under $7.
Give your TV a try - if no go, then you'll know that it's an adapter problem.
Good luck,
Clinton

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I always recommend monopriice.com for cables and adapters.
Mini DisplayPort | Thunderbolt® to HDMI® Adapter w/ Audio Support
But all these adapters are in the form of "pigtails" and no matter where you get them the strain relief and the cables can fatigue and break from constant bending or pulling (doesn't help your macbook socket any either).
Maybe you should order a bunch. They are cheaper that way at monoprice.
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Hi
Is it possible to use a Mini DisplayPort to HDMI Adapter like this one to connect the HDMI out port on my Nokia N8 to my 27" imac?
http://www.monoprice.com/products/notify.asp?cid=104&cp_id=10428&cs_id=1042802&p_id=5311&cmd=ansubmit
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Eric has helped in providing in dept understanding around the subject matter, but unfortunately, it has not provided the solution to the problem.
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My *iMac is -
iMac (27-inch, Late 2009)
iMac10,1
(10.10.1)
MB952XX/A
Running OS X Yosemite
When the above image is compared with the following image below, there is definitely something missing and it’s probably affecting the Mini DisplayPort to HDMI Adapter to work in my connection.
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How can I make my iMac 10,1 (27-in, late 2009, currently running OS X Yosemite 10.10.1) to have the above AirPlay mirroring or Arrangement to activate the connection?
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edgravel
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