VOGONS


First post, by timmun

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Hello,

For a while now I've been using a very stable machine for Windows 98 to play games on.

It has:
Asus P4g8x mainboard
Nvidia ti 4600 gpu
Pentium 4 2400 mhz
1 GB ram
Western digital black 80gb 7200rpm hdd
2 cd drives
1 floppy drive
Fsp group 300 watt psu

I recently found a Nvidia Galaxy Zeus FX 5900 XT and wanted to try this in this system.
This gpu has one molex connector.

I first removed drivers, then used ddu in safe mode and plugged in 5900xt.
Card gets recognised, install drivers and after reboot got a "insufficient power" error by the nvidia driver that said I didn't have the molex connected.

I since tried 3 different psu's including a FSP Group 340 watt and a more modern 2010 Corsair Cx430, all same problem.

Is this card incompatible with my mainboard or a power issue on the card?
I checked continuity on the card and power from the molex and is fine.

Thanks in advance for any input.

Reply 1 of 17, by old school gamer man

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how are the caps on the card? and cut traces? missing SMDs?

Reply 3 of 17, by old school gamer man

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the coil below the molex... l21 on the pcb it has 1ru n top of the coil looks chipped there is also a black smd on the back of the card below the FC CE stuff writing the on PCB that looks half way knocked off.

Reply 4 of 17, by paradigital

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Back in the day this message could also pop up on cards that don’t even have a supplemental power connector (such as 6600gt, 7600gt etc).

This usually was attributed to the motherboard BIOS.

Is there a newer BIOS you can try on the motherboard?

Reply 5 of 17, by timmun

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old school gamer man wrote on 2025-07-29, 19:36:

the coil below the molex... l21 on the pcb it has 1ru n top of the coil looks chipped there is also a black smd on the back of the card below the FC CE stuff writing the on PCB that looks half way knocked off.

Now that you say it, that does look a bit off.
I saw the chipped top of the coil but thought that would be fine, didnt see the smd. They are connected to each other, no?

I'll reflow/add some solder, maybe that helps.

Reply 6 of 17, by chrismeyer6

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How are the solder joints for the molex connector?

Reply 7 of 17, by timmun

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chrismeyer6 wrote on 2025-07-29, 20:29:

How are the solder joints for the molex connector?

All very solid, double checked them.
They have good continuity.

paradigital wrote on 2025-07-29, 19:44:

Back in the day this message could also pop up on cards that don’t even have a supplemental power connector (such as 6600gt, 7600gt etc).

This usually was attributed to the motherboard BIOS.

Is there a newer BIOS you can try on the motherboard?

Thanks for the tip but I'm on the latest bios 1006.

Reply 8 of 17, by timmun

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chrismeyer6 wrote on 2025-07-29, 20:29:

How are the solder joints for the molex connector?

I rechecked this, even though I did already and it had continuity, reflowed the solder again and now it works!
So apparently this was the problem.

Thanks everyone.

Reply 9 of 17, by chrismeyer6

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Wonderful news!! I'm glad to hear you got the card fixed. Now it's time to enjoy it

Reply 10 of 17, by old school gamer man

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you still need to fix the other problems... that lose smd is not something i would leave alone.

Reply 11 of 17, by timmun

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old school gamer man wrote on 2025-07-30, 16:37:

you still need to fix the other problems... that lose smd is not something i would leave alone.

Yeah, also checked your findings.
The coil is still fine, only the plastic part is broken off it seems.
The smd looks like it was just put on the board at a little bit of an angle, was still solid but I reflowed it into place with some heat. 😀

Reply 12 of 17, by old school gamer man

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timmun wrote on 2025-07-30, 17:04:

Yeah, also checked your findings.
The coil is still fine, only the plastic part is broken off it seems.
The smd looks like it was just put on the board at a little bit of an angle, was still solid but I reflowed it into place with some heat. 😀

that's good to hear on the SMD but I would be worried about the coil. I seen them unwind before when the top is chipped. if you come by a spare I would swap it. regardless its good to hear its fixed. the 5900 are fun and stable card. before I moved to x79 for my retro gaming pc I had a a few 5950U's and 5900 and all of them were wonderfully stable and reliable.

Reply 13 of 17, by timmun

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old school gamer man wrote on 2025-07-30, 18:19:
timmun wrote on 2025-07-30, 17:04:

Yeah, also checked your findings.
The coil is still fine, only the plastic part is broken off it seems.
The smd looks like it was just put on the board at a little bit of an angle, was still solid but I reflowed it into place with some heat. 😀

that's good to hear on the SMD but I would be worried about the coil. I seen them unwind before when the top is chipped. if you come by a spare I would swap it. regardless its good to hear its fixed. the 5900 are fun and stable card. before I moved to x79 for my retro gaming pc I had a a few 5950U's and 5900 and all of them were wonderfully stable and reliable.

Ah that's interesting, thanks for sharing!
I have a lot of for-parts-cards so I'll have a look.
is 1R0 some sort of value code or can I drop in any that fits?

It feels very stable indeed, probably overkill for Win98 but everything is smooth.

Reply 14 of 17, by timmun

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chrismeyer6 wrote on 2025-07-30, 16:00:

Wonderful news!! I'm glad to hear you got the card fixed. Now it's time to enjoy it

Enjoying it indeed, and added this to keep it cool 😎

Reply 15 of 17, by old school gamer man

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timmun wrote on 2025-07-30, 18:52:
Ah that's interesting, thanks for sharing! I have a lot of for-parts-cards so I'll have a look. is 1R0 some sort of value code o […]
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Ah that's interesting, thanks for sharing!
I have a lot of for-parts-cards so I'll have a look.
is 1R0 some sort of value code or can I drop in any that fits?

It feels very stable indeed, probably overkill for Win98 but everything is smooth.

its a 1.0 µH inductor, other than that IDK. I would not just swap in any other inductor/coil willy-nilly A good temp fix would to to super glue the coils, that will help prevent the could of unraveling.

Reply 16 of 17, by chrismeyer6

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You can always put a dot of hot glue on the inductor but it's probably fine. I have parts worse than that that the coils haven't unwound and they've been like that for over a decade. I've also used hot glue and years later still fine.

Reply 17 of 17, by old school gamer man

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chrismeyer6 wrote on 2025-07-30, 19:20:

You can always put a dot of hot glue on the inductor but it's probably fine. I have parts worse than that that the coils haven't unwound and they've been like that for over a decade. I've also used hot glue and years later still fine.

yeah hot glue or supper would be a simple fix