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Someone Help Me Please!!!

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Blaz   12-06-2002 at 12:15:55 AM

Here it goes. My computer has an ATI Radeon 9700 Pro in it. A month or so ago I bought a 23" Apple Cinema Display with an ADC to DVI converter and voila of course it works. Well, a couple of weeks ago I started having trouble. The problem is that right after the Windows XP loading screen comes up the monitor goes blank and the computer does absolutely nothing! I have to restart and sometimes it will go into Windows the second time around. The workaround I have found is that if I boot into Windows Safe Mode and then reboot into Windows then it works fine. Also, I tried unplugging the monitor from my cpu and then starting it up and it still goes to a black screen/i.e. never loads windows. I have this ATI card in a 933 Dell Dimension 4100. I couldnt tell what my PSU was rated in Watts and so I think it may have something to do with that. What do you guys think? The power supply isnt rated high enough (or how can I tell how many it is cuz I looked on the PSU and it is nowhere to be found) or something else like cpu gone bad or somethin like that? Any help would be great! Thx in advance

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Crashman   12-06-2002 at 03:43:31 AM
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Usually a blank screen after windows loads is due to the refresh rate being set too high vor the monitor. This wasn't such a problem with Win9x, but NT dirivatives allow you to set frequencies that don't work with your hardware.

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Blaz   12-06-2002 at 04:01:51 AM
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The refresh rate that windows is set to is 60hz which is, as far as I know, perfect for just about any monitor or LCD or am I mistaken?

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Crashman   12-06-2002 at 04:28:37 AM
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OK, that's a functional frequency for all monitors (but hard on the eyes). So scratch that idea, I'm lost now. You've tried it with a different monitor?

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upec   12-06-2002 at 04:42:04 AM
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Most LCDs only work at 60MHz.

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Crashman   12-06-2002 at 05:48:21 AM
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Yes, I know that. Eye comfort can be had at lower refresh rates with LCD's because they have a certain amount of lag. This effect is also analogous to the difference between incandecent lighting and flourencent lighting, where the next wave comes in before the element of the incandecent bulb has a chance to cool, but the flourecent light actually flashes 60 times per second. In a similar manner, the slower LCD display does not complete discharge any given pixel before the next signal hits it, while the CRT at 60Hz flashes 60 times per second. This is the reason why low refresh rates (60Hz) and flourencent lighting can cause the CRT to appear to be flashing, jumping, or have scrolling lines of dimness, while a similar affect is virtually unknown to the slower DFP.

Anyway, I didn't look up his monitor to see if he was going from a DVI to CRT or from a CRT to DVI, I have no idea what monitor he has.

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upec   12-06-2002 at 10:20:39 AM
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Apple Cinema Display is a LCD not a CRT. You can tell because it uses the DVI connector. I do not know any CRT uses DVI connector.

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Crashman   12-06-2002 at 03:42:05 PM
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Ah, but d00d, I don't even know what ADC means or which way he was adapting. You think I actually take time to look things up for these post?

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upec   12-06-2002 at 07:56:24 PM
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ADC stands for Apple Display Connector.

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Crashman   12-06-2002 at 11:17:08 PM
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And that's an Apple version of a DVI or VGA connector?

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