Nforce, I heard nightmares about those chipsets just dying randomly
you can try keeping pressure on chipset radiator and then turning on

Those chipsets have solder bump issue, I had Intel version of that chipset, it worked for 5 minuets then died, you might get it to work again by reflowing the chip.

Nforce, I heard nightmares about those chipsets just dying randomly
you can try keeping pressure on chipset radiator and then turning on

Tried that, but no success.

you might get it to work again by reflowing the chip.

Thanks. I will try that.

All nforce chipset with embedded graphics potentially faulty. It's just a matter of time. Though nvidia nforce chipsets (not others!) can be revived temporarily. Hot air (200-300 degree of Celsius for 20-30sec) applied to a die crystal makes magic. It's better to warm up slightly an area around the die first

wait, so its NVidia bumpgate
"Chips affected are mostly from 2006-2008.
MCP and GPUs are affected, both in laptops and desktops.
Some articles list G86, G86A2, G84, C51, G72, G72M, G73, G72A3, MCP67 and NV42. But these aren't the only ones, some G9x and other MCPs were affected too.
That's some later GeForce 6000, almost all GeForce 7000, almost all GeForce 8000, some early GeForce 9000. Affected MCPs are MCP5x (northbridge only, not southbridge), MCP6x and early MCP7x."

reballing wont help, heating will fix it temporarily, basically recycle and buy something intel based

I'd add nForce 4 in there as well. I've seen enough dead nF4 boards to be certain of that, both AMD and Intel.

So i tried to reflow the chip and it worked, sort of. At first it hunged up on D4, which means:

Returning to real mode. Executing any OEM patches and setting the stack next.

Then, while pressing on the chip it went to 31 and it displayed an black screen. Now it went back to D4.
I also now noticed CPU sag, so that might also be the issue. Any ideas what to try next? I don't wanna throw it away yet.

I got it to post once, but now its hanging up on 2A. Any suggestions?

trash, all products with nvidia bumpgate chips belong there, cant fix it

nForce 4 was the desktop chipset where it started going downhill. It didn't help the hellspawns that were dubbed 6100 and 6150 - they already had the bump issues inherited from nForce 4 and adding a iGP was a perfect recipe for disaster.

I've seen and had more dead nForce 4 boards (both the AMD variants and the Intel SLi version) than I can even count. nForce 3 seems to have been far less failure-prone in that regard.

Well, after heating up the chip once again its only hanging up on D4. Before it was posting without problems on cold boots, but was hanging up after a couple of seconds. I decided to give up for now and move to a different mobo. Thanks for help everyone.

Quick followup on this mainboard. Accidentally chiped NB and the socket decided it was a good time to have contact issues. It was kinda useful for testing if cards would hang the system and if CPU's wouldn't kill mainboards. Definitely not making any further attempts on repairs.