sulsoft

Hello, We are talking about what windows version? Xp, Vista, 7, 8? You have tested RAM with memtest86+ or the windows 7 memtest? In a first view i see that instability problems, normally is generated by RAM DIMM modules with problems. 99% your problem is hardware question. You have tried to remove any hardware not necessery like PCI USB expansion cards or something like this? You have tried to reset BIOS? This of course can be a BIOS configuration problem? You have notice some problems this kind?

I'm sure that Windows is 64 bits, not 32 bits. About slots the motherboard have 1-PCI-E x 16, 1-PCI-E x 1, 1-AGI x 4 (is used to install PCI-E expansion cards, i think like in crossfire), and 3 PCI slots. Now, the NVidia 630GT is in PCI-E x 16 slot. What is strange, is when i remove one RAM dimm module, the video card is detected, and i can install the video driver software, but i note strange symptoms. I explain. One is when Windows start and it shows "Windows is starting", i don't see the colors like a flower, i only see a dot color point. In the other side, windows start the reveal some instability, and randomly windows hangs in black screen saying "Windows is starting", and the "flower color" as i say, don't appear. In BIOS i've looked up, and the only option i have is in tab "Chipset configuration" the entry "Primary Graphics Adapter" - Choice between "PCI" and "PCI Express". I don't see other video option. Strange problem, or better saying, strange WINDOWS/MICROSOFT problem. Any ideas is appreciated ...

I've tried memtest from Windows7 but i don't see any problems with RAM. This can be for some reason a conflit with NVidia cards? I ask this, because in the past i have put a ATI video card from a friend, probably last year, and the problem solved for himself.

No, Windows is 64 bits

I have a weird conflict in my PC. When i start Windows 7 with Gigabyte graphic card 630 GT 1 GB PCI-e installed and 2 memory RAM modules 2 GB each, my graphic card is not recognized by Windows, i see an exclamation in PCI Express in Windows Device Drivers. I had tried with memory in Dual Channel and without, and the problem continue. When i remove one RAM module and run computer only with 2 GB, my graphic graphic card is recognized and problem dissapear. I never saw this kind of error and i need your help please. Computer specs: CPU Core 2 Duo 3.0 Motherboard AsRock conree1333-esata2 2xDDR2 667 Mhz 2 GB each Graphic Card Gigabyte GT630 1GB DDR3 PCI-express