Have altered the display settings on my mac mini (version 10,6,4) it is now generating a screen that doesn't produce a signal on the HDMI tv I use as a monitor. have no visible screen so cannot reset back.

Have altered the screen resolution,(don't ask why). and am now getting a no signal message on the LG HDMI tv I use a monitor. Have tried going through an old CRT monitor, but no luck. it all worked perfectly before I meddled. Cannot see a screen to reset to a resolution that works. Am new to Macs, and not exactly overburdened with tech know how. Help please.

thanks for your reply Stefan. have reset the pram, but no luck. still getting unsupported signal message. also tried connecting to the tv via an HDMI cable, then get the tv to detect the display. managed to get a picture of a screen saver ( purple galaxy) but this was competely static, could not get any further response, would really appreciate anything further you could add.
Peter. (avus)

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Safe Boot from the HD, (holding Shift key down at bootup), see if you can set a good resolution.

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hello,
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Have altered the display settings on my mac mini (version 10,6,4) it is now generating a screen that doesn't produce a signal on the HDMI tv I use as a monitor. have no visible screen so cannot reset back.

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