Windows 7 - 4 monitors problem

**upagep** · 09-08-2009

I have a HP dc7900 desktop computer (Intel E8400 3 GHz, / GB RAM with windows 7 ultimate x64).
I would like to use 4 monitors. I have a nvidia 8800 GTS in the PCI-e slot. This card is so big, so I cannot insert an other card to the second PCI-e slot.
If I try to enable the onboard VGA card, the windows won't boot up.
So I bought a nvidia 6200 64BIT PCI card, put it to the PCi slot, but the same happened.
Please advise.

Norbert

torrentg · 09-08-2009

Go into system bios and ensure that PCI-E is the default first adapter or similar setting. Then try booting with the new PCI card in. You could also try a different PCI slot if another is available.

Otherwise, what is happening when Windows will not boot? Is it crashing? Blank screens? Hanging? More info please.

**upagep** · 09-09-2009

Thx for the help. I checked the bios the PCI-e is the default first adapter. I have 3 PCI slots, all of them result the same.

The Windows starting screen is hanging.

Any suggestion?

Thx

Norbert

**upagep** · 09-09-2009

Update: with a knoppix live cd + official nvidia driver everything is working fine, so it is not a hardware problem.

Norbert

torrentg · 09-09-2009

Cool about the Knoppix. Glad to hear that.

Have you tried booting into Window's safe mode with the PCI card installed? That may be helpful to "teach" Windows that the new card is physically there and then a successive reboot into normal mode may have no errors. I've already had an instance or two like this.

Not sure about your bios, but maybe there is shadow, cache, PCI VGA palette snoop (disable this) or other settings that Windows is not liking.

Another idea is to try to boot to Windows with the PCI card physically installed and no monitors connected, to see if Windows boot alright then. If so, you could then plug monitors in, even while Windows is running.

Do you know which power supply you are using and how many watts it is rated at?

**upagep** · 09-10-2009

Hello

Finally I've found the solution. I have 2x2 GB RAM and 2x1 GB RAM, I removed the 2x1 GB and everything is working fine.

The 1 GB RAM is working on 667 MHz, the 2 GB RAM is working on 800 Mhz.
With 1 video card they are working fine, with 2 they don't.

Regards

Norbert