If it works in another board, it isn't dead.
If it didn't work, you fried something.

myne wrote on 2025-09-03, 03:58:

If it works in another board, it isn't dead.
If it didn't work, you fried something.

I tried it in my Pentium III motherboard Apollo pro 133a Asus P3V4X and it doesnt work 🙁

Do you have any idea for testing the card, could it be only a capacitor ? Do you know what could be fried ? Thanks

https://old.pinouts.ru/Slots/agp_pinout.shtml

You put it in backwards.
It could be anything.

Fairly likely some high voltage went the wrong way through the core or memory and literally burnt it out.

myne wrote on 2025-09-03, 04:22:

https://old.pinouts.ru/Slots/agp_pinout.shtml […]
Show full quote

https://old.pinouts.ru/Slots/agp_pinout.shtml

You put it in backwards.
It could be anything.

Fairly likely some high voltage went the wrong way through the core or memory and literally burnt it out.

Thanks for your answer and pinout

Is this a joke...

MikeSG wrote on 2025-09-03, 12:28:

Is this a joke...

Yoooo, 🤣 That's what I was thinking.

Bench parts can definitely be inserted wrong... F56 You'd have to be pretty messed up to screw that one up, 🤣

Here's proof of the operation:

Correct me if I'm wrong, but wouldn't the card only be fried if the system is turned on while it's plugged in backwards?

RetroLizard wrote on Yesterday, 04:52:

Correct me if I'm wrong, but wouldn't the card only be fried if the system is turned on while it's plugged in backwards?

it seems so 🤣 mine is fried

RetroLizard wrote on Yesterday, 04:52:

Correct me if I'm wrong, but wouldn't the card only be fried if the system is turned on while it's plugged in backwards?

Yes:

i turn on the psu, nothing turn on, but i tried 3 times and wait a few seconds.

Major Jackyl wrote on Yesterday, 02:32:

Yoooo, XD That's what I was thinking. […]
Show full quote

MikeSG wrote on 2025-09-03, 12:28:

Is this a joke...

Yoooo, 🤣 That's what I was thinking.

Bench parts can definitely be inserted wrong... F56 You'd have to be pretty messed up to screw that one up, 🤣

Here's proof of the operation:

The attachment 20250903_212740.jpg is no longer available

yeah it fit perfectly like mine. it was a funny error, i was really sleepy, i should have go to bed. First time in 30-35 years i inserted a card the wrong way LoL. Time to laugh 🤣. i paid just 10$ its ok.

dionb wrote on Yesterday, 06:21:

RetroLizard wrote on Yesterday, 04:52:

Correct me if I'm wrong, but wouldn't the card only be fried if the system is turned on while it's plugged in backwards?

Yes:

i turn on the psu, nothing turn on, but i tried 3 times and wait a few seconds.

But still nothing happen, i'm still surprised it fried the card. i didnt see the psu turn on at all

MikeSG wrote on 2025-09-03, 12:28:

Is this a joke...

no unfortunately, i was sleepy a lot 🥱😵😵‍💫
still very funny 🤣

I've done this with ISA cards before.

The rule is: for PCI/AGP the components face down. For ISA they face up.

ETA: Unless you're dealing with BTX. Then PCI/AGP face up same as ISA.

how about the rule is "install slot brackets"

my father is back from vacation. he thinks that is just a fried diode and nothing else serious, he will ckeck it and try to repair it soon, i will let you know

renejr902 wrote on Yesterday, 06:24:

dionb wrote on Yesterday, 06:21:

RetroLizard wrote on Yesterday, 04:52:

Correct me if I'm wrong, but wouldn't the card only be fried if the system is turned on while it's plugged in backwards?

Yes:

i turn on the psu, nothing turn on, but i tried 3 times and wait a few seconds.

But still nothing happen, i'm still surprised it fried the card. i didnt see the psu turn on at all

Very likely the power supply is/was triggering its OCP and refusing to turn on.

RetroLizard wrote on Today, 02:45:

Very likely the power supply is/was triggering its OCP and refusing to turn on.

OverCurrentProtection can still allow things to fry, and in some cases is kinda a bad sign...

If your supply can provide 20A and OCPs .. that means at least 20A did pass through the board...
The fact that it wouldn't "turn on" over several tries means that something simple didn't fry/open
(and hence stop drawing power) .. and fixing the card position still not letting it turn on means
that something fried enough to develop a fairy serious short on the power rail (assuming it's didn't
just pop a fuse/breaker in the supply).

You really need to do some analysis to see where the power draw is.

If it powers up without the card, but not with it - something on the card ... start tracing power
rails and testing components on the card. Less likely that the mainboard would have been damaged
since power to it's components was not reversed (but still possible due to the high currenet draw, but
it that case more likely something simple).

how...? in 30 years i never installed a card in the wrong way, the backplate prevents that

Living wrote on Today, 05:32:

how...? in 30 years i never installed a card in the wrong way, the backplate prevents that

While you are Mr. Perfect, absolutely nothing prevents inserting cards wrong way especially on the bench. If something would, this wouldn't haven't happened to OP.

I don't get it why some people need to start high hatting about honest mistakes. Totally unnecessary and it doesn't help OP one single bit if the card can still be revived.

Shit happens. For example I've installed MB AT power connectors wrong way although I very well know how they should be installed. That was goodbye for that nice 486 PCI board. And I've probably made dozens of similar stupid rookie mistakes with retro hardware, just with less painful consequences.