monitor doesn't detect connection to tower?

August 26, 2010 at 04:51:53
Specs: Windows XP, not sure. thery're old though
my JROTC has these two computers that, when turned on, say that the monitor doesn't detect a connection (presumably to the tower) and then immediately starts going through various colored screens. While I know that the monitors provide a good display, they're unusable therefore rendering the computers unusable.

I inspected the cable that links it to the tower, and found that the cable had every prong but one (not like it was ripped out, like it was never there) while the tower had a space for that missing prong. could that be the problem?


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#1
August 26, 2010 at 05:06:20
No, that's quite normal.
Does this happen also in text mode, e.g. when entering the system BIOS?

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#2
August 26, 2010 at 14:57:05
I'm not sure if it happens in BIOS, I never thought to try >< I'll do that tomorrow, and as a small update, one computer inexplicably reverted to normal (i.e. I turned everything on and it started the OS and etc. instead of immediately going to the colors)

Also, to clarify, the "prong" thing is normal?


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#3
August 26, 2010 at 15:10:57
Yepp, the most standard VGA monitor cable do only have 14 pins or, the VGA cable do have 15 pins, but pin 9 is not connected of is +5V DC, if the pin is available. So don't shorten that pin.
On very old VGA graphics cards, the female do have no hole for pin 9.

Pin 9 is in the second row.
Here you can see a picture on where pin 9 is located.
http://myhometheater.homestead.com/...

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#4
August 26, 2010 at 15:47:21
I see, well I'll hook up the final computer tomorrow and see if I can get into the UI. If I can't, what then?

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#5
August 26, 2010 at 16:02:34
Let's think about it, when the time has come :-)

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