Mac Mini display doesnt work after hard shut off

I have a mini that i bought in 2008/9 and it is connected to my tv with a HDMI cable. I had to hard shut it off, and upon rebooting, nothing shows up on my screen. The sound it makes when it starts up doesnt come on either. Is there a way to fix this without taking it in?

Do you hear 2 chimes just on normal startup?
The following table lists the new tones and their meaning:
Tone(s)          Description
1 tone, a 5-second pause, repeat          No RAM installed
3 successive tones, a 5-second pause, 3 successive tones          RAM does not pass data integrity check
1 long tone when holding down the power button          Firmware upgrade in process. See About firmware updates for Intel-based Macs for more details.
3 long tones, 3 short tones, 3 long tones          Firmware restoration from CD in process. See About the Firmware Restoration CD (Intel-based Macs) for more details.
http://support.apple.com/kb/HT2538
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable

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Hdmi sound on my mac mini has stopped working after I upgraded the OS

I just upgraded the iOS on my Core i5 Mac mini to 10.8.5 and my hdmi sound on my monitor stopped working. I have tried rebooting and adjusting the Audio midi settings and nothing seems to work. I know the mac mini speakers are working and the monitors speakers are working. What do I try next?

Resetting the NVRAM / PRAM, as per > About NVRAM and PRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.

Mac Book Pro - Mac Mini; sharing stopped working after IP/Net change

I apologize in advance for the length of this, I've got a complex issue that I've been unable to diagnose with the usual published notes...
I have a Mac Book Pro and Mac Mini. I previously had sharing and screen sharing working between both systems.
About a month ago I switched internet providers (to AT&T U-verse) and their router required me to make major changes to my internal network as listed below.
Since those changes the Mac Book Pro can not access the Mac Mini in any way via Finder options, but still shows it in Finder->Sharing. I can access the Mini via shell access (telnet/ssh, ftp, www) but nothing via the normal automatic Bonjour type accesses (file sharing, screen sharing).
Conversely, the Mac Mini has no difficulty accessing the Mac Book Pro in any way.
List of the significant changes that were made:
1) My main router was replaced by the AT&T router.
2) The AT&T router does not allow any fixed IP addresses within the network, requiring all of my network shemes to get re-done (I used a mix of fixed and DHCP previously).
3) The IP range changed for all computers due to the router.
4) Both Mac Mini and Mac Book Pro were and still are on DHCP.
5) The Mac Mini's wireless was disabled and it was plugged directly in to the Ethernet port on the main router.
The behavior of the system is as if the Mac Book Pro is locked on the old IP address (but only in the context of the Bonjour services). Although I can't prove this, there was a brief period where both the old and new router and ethernet and plugged connections were all active on the same network and during this period the Mac Book Pro accessed the Mini without difficulty (the old IP was bound to the wireless port on the Mini).
Unfortunately it wasn't until after I had exchanged this other router that I realized that things were not working correctly.
Another unusual clue, the Sharing used to say use afp://<mininame> to access from Windows and now it says afp://QVT_529. I have to assume this is something to do with the DHCP from the AT&T router but all of the AT&T system screens show the <mininame> properly bound to the active DHCP port and nothing hinting at what the QVT_529 references. Going to this address fails and I can't ping it from terminal.
I've been scouring the net for the last month trying different things with absolutely zero results on any front. All settings check out perfectly. No firewall changes were made. No evidence that anything is out of place.
However, I can still only connect in one direction. It just doesn't make sense.
Some things I don't know that I think might help me resolve the issue:
1) Any recommendations with how I might be able to get a better view of what Mac Book Pro might be trying to connect to via the Finder->Sharing link to the computer?
2) Any way to probe the Mac Mini's file or screen sharing features from the terminal (going around the Finder link)?
3) Any possible issues with local networks that might interfere with these services? (there are several switches/hubs between and other devices on the network, but everything checks out at the IP flow level)
Thanks in advance,
Barney

This is just a stab in the dark since I haven't run into this and I don't know all the steps you have taken (or researched.)
It seems to me that since it is working right from the mini->MB Pro, then the problem should reside on the mini's broadcast side or the mini's OSX firewall. If your firewall is set correctly (as you said), my guess would be that network or firewall preferences have been corrupted by combining multiple, conflicting settings for the same preference due to hardware changes. If I was experiencing this (assuming that every setting on the routers/switches and the firewalls (router/OSX) etc were 100% correct), I would create a new user account and verify that the problem is still manifesting itself. If this solves the problem, I know it is the user account that is messed up and not the OS. If this doesn't solve the problem, I turn off any sharing services, delete the resident Locations (by the drop-down menu in the Network System Preference) as well as the list of Connections (left pane of Network SP) and restart the machine. I then set-up new network, sharing services and firewall settings after the restart. This has solved all of my network sharing issues on my equipment, home and work. (Permissions not with-standing.) If this hasn't solved my problem, my next step would be to reset NVRAM, PRAM and clean system caches (using OnyX.) Reinstall of OSX commences then. I don't know enough of UNIX to be comfortable in terminal so if my steps above failed, I would be coming here to ask or, if I thought the problem resided on non-Apple hardware, the offending hardware support channels.
I don't know if this helps, but I hope so.
D.

Mac Mini display settings change after shutdown

After a shutdown, my Mac Mini's display settings will change on startup. This happens about 80% to 90% of the time.
Sometimes it may be due to playing a video game (Diablo 3) where the resolution in the game is slightly lower. The Mac Mini is set to 1080p, but in-game it is 1600x900. After playing a game, maybe half the time, when I go back to my desktop, the display looks different. However, even other times even when I wasn't playing a game, after a shutdown, the display settings will change.
The strange thing is that it isn't a change in resolution. The resolution stays the same. It is always 1080p after every shutdown. But something in the display changes. Curved shaped look more pixelized, like some kind of smoothing or antialiasing has been turned off. And bright things are too bright, dark things too dark, so images lose some detail. It is also a bit painful on the eyes. Everything looks less vivid and very dull.
Someone in an older post suggested changing refresh rates. Unfortunately, my Mac Mini doesn't show that option. It was also suggested to connect to a different monitor to possibly make the options appear. But I don't have another monitor.
My current solution is to reset NVRAM (command+option+P+R) on startup. It seems to reset the display settings and fixes the display problem 100% of the time. But the thing is, I have to now keep doing this almost everytime I start up my Mac, which is annoying.
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hey p26grinz,
without the external monitor and after setting the display, will the setting remain ?
have you tried uninstalling the graphic driver from your unit and then testing it with generic driver ?
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Mac mini screen wont work after lion

My hdmi connection to my tv wont work after installing lion last night. It worked once last night but hasnt worked since. All cables are in tact and computer is set up the same. I cant even see anything to fix it!

I called apple - I'd have been in trouble if my mac had been my only internet access!
I had to reset the P-RAM
as so:
mac is powered off
turn on power then instantly press keys: command option P R
the mac will chime as usual then on the second chime let go of the keys.
After this my screen worked again.
For info - command key is cmd, option key is alt
I did this with an old mac wired keyboard - not sure if it will work on bluetooth keyboard, but it might.

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My Mac would not awaken from sleep mode so I did a hard-restart and when it restarted one of my duel monitors will not work as it did before. I've zapped the P-Ram, no help there. Thanks for any suggestions.

I think a SMC Reset could prove to be effective:
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.

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Also:
Apparently some are reporting that this causes the older PowerPC (PPC) applications that are supported in 10.6 via 'Rosetta' to crash upon attempting to open/save/print using any dialog box, or fail in other similar ways such as simply not printing or quitting, or freezing/hanging/crashing of the application.
You might wish to read:
http://www.macintouch.com/readerreports/snowleopard/index.html#d02feb2012
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Time Machine restore: http://support.apple.com/kb/ht1427
If you are restoring a backup made by a Mac to the same Mac
With your backup drive connected, start up your Mac from the Lion recovery partition (Command-R at startup) or Mac OS X v10.6 installation disc. Then use the "Restore From Time Machine Backup" utility. Select the backup prior to your issues, and it will be restored back to the state it was in at that time.
Cheers,
Daniel Feldman
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HT1338 Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Finder icon on dock, macintosh hd, library, launch agent - delete all files & restart sleep to test
also
Finder icon on dock, macintosh hd,
Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
delete file & restart sleep to test.

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Will a Mac cinema display monitor work with an Acer hard drive

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Hello,
Which exact Cinema Display & which Acer HDD?

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Thanks
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A Brody,
I really apprecate your very quick respond, Its too late to back up as of now, my hard drive wont load at all so I cannot follow your instruction to back it up. Learn a hard lesson but I will from now on following your link.
Also my hard drive it is not available to do the free exchange program.
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Again, Thank you

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Cheers!
DALE

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Mac Mini display doesnt work after hard shut off

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