9700Pro works in one PC but not another?

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21-08-2004, 06:06 PM
Howard

9700Pro works in one PC but not another?

My friend restarted his computer and found that it would not POST. He did nothing prior to this except plugging in a different monitor whilst Windows was running and changing the resolution.

Removing the 9700 Pro and inserting another card (in this case a GF4 MX440) causes the PC to boot normally.

Originally I thought the card itself was shafted but plugging it into another PC proves this theory wrong.

The specs of his PC are:

Asus A7N8X-E Deluxe
AthlonXP 2500+
1GB Crucial PC2700
Sapphire Radeon 9700Pro 128MB

The PC that the card works in has a Gigabyte mobo with a VIA chipset, AthlonXP 1800+, etc.

Does anyone have any idea why the card won't work in this, but will in another PC?

We've tried everything... Resetting the CMOS, turning off AGP8x and Fastwrites, different power connectors, unplugging power to everything, etc.

Help is greatly appreciated :)
21-08-2004, 07:07 PM
pre

Unfortunately a silent flaw (eg unacknowledged by ATi) is that the inital power draw on the 9700 series (in particular the AIW) was so high that it trips the overvoltage protection on some (even good) PSUs. Only way to fix it is by having a relay switch in series on a molex connector or find another home for it.

Sorry.
21-08-2004, 07:09 PM
Howard

I haven't heard about this before :confused:
21-08-2004, 07:28 PM
Steve

Geforce 4 MX - AGP 4x 1.5V, 9700 - 8x AGP 0.85V.

Perhaps the problem lies in the voltage regulation circuitry on the mobo not being able to operate the card for some reason...

That's pure speculation. Maybe try an AGP 8x card in the computer to verify this.
21-08-2004, 08:07 PM
BUFF

Quote:

Originally Posted by pre

Unfortunately a silent flaw (eg unacknowledged by ATi) is that the inital power draw on the 9700 series (in particular the AIW) was so high that it trips the overvoltage protection on some (even good) PSUs.

that problem is actually worse with good PSUs as their protection is more likely to trip ...
17-09-2004, 03:57 PM
Howard

Hmm... He's replaced it now with an X800 Pro and it works fine.

Thing is his clock loses a few minutes of time now. Could his old Qtec PSU somehow have damaged the motherboard in any way? :confused:
17-09-2004, 04:01 PM
Kezzer

Yes it could have
17-09-2004, 05:34 PM
malfunction

Try replacing the CMOS battery (for the clock - nothing to do with the 9700 not booting). And if he was using a QTEC PSU then I'm fairly sure that would be to blame (for a start the 2500+ will be drawing more current than the 1800+ which probably pushed it over the edge).