My first post since years here but I hope you can help me... For about 4 year I have a desktop with the following specs: Cooler Master HAF 912 Plus - Mid tower MSI X79A-GD45 Plus - Socket 2011 – ATX Intel Core i7 3820 3.6GHz 10MB LGA2011 Intel Thermal Solution RTS2011AC - 90mm Kingston HyperX blu – 2x4GB 1600MHz PC3-12800 MSi GeForce N760 TF 2GD5/OC - 2GB - PCI-E (driver 359.00) Fortron Source FSP700-50ARN 85+ 700 Watt PSU Samsung 840 Series 120GB 2.5" SATA600 SSD Seagate 2TB 3.5" SATA-600 7200rpm Asus DRW-24F1ST - DVD burner HKC card reader intern USB2.0 CR001B Iiama ProLite E2473HS (DVI-D connection) MS Windows 7 Home Premium 64 bits Worked perfectly until 2 months ago when my mobo died due to an (accidentally) wrong BCLK setting. So I needed to be replaced it but couldn’t find the same board anywhere around the world. After a long search I found an almost identical board, an MSI X79A-GD45 (8D). So I switched the board, did a clean Win7 install and updated the mobo drivers via Live Update 6. Flashed/updated BIOS to E7760IMS V10.7. Everything runs fine now - Win7, gaming (GTR2, rFactor, pCars, GPL), MS Office, Adobe CS6 - but here is my question/problem: Although all components should be PCIE 3.0 x16 compliant/compatible my system runs in PCIE 2.0 x8. When I enable PCIE 3.0 in BIOS I get a black screen. My system runs but I get no video signal. I can only reset it to normal by using the Clear CMOS button but then it’s back to PCIE 2.0 x8. What’s wrong here? I know that there is almost no performance gain with running in PCI 3.0 but I would like to know why it doesn’t work on a 8D board while it did on the Plus board. And why does it run now in PCIE x8 instead of x16? Thanks in advance for your help.
Tried that, doesn't work because in BIOS PCIE 3.0 is disabled. As I wrote, as soon as I enable in BIOS PCIE 3.0 I get a black screen
From mobo manual: 3x PCIe 3.0 x16 slots (PCI_E1, PCI_E4, PCI_E6) PCI_E1 & PCI_E4 support up to PCIe 3.0 x16 speed GTX 760 is in PCI_E1
They do. Its just not officially supported. I had GTX 670 sli with i7 3820 @ 4.5 and OPs original board that died and has pci e 3.0 working. But honestly, single gpu, especially a gtx 760, you really wont see any difference on gpu performance. Even if its enabled in the bios, you have to manually enable every driver update with nvidia's BS.
What bios version is your GPU? Check with GPU-Z. Does you board have an option for UEFI or anything like that?
Update bios to this one. https://www.techpowerup.com/vgabios/157185/msi-gtx760-2048-140225 It says UEFI supported.
Thanks but I'm too scared to do it. What if it goes wrong, then I have nothing... What would be the benefit of a UEFI supported video BIOS? What tool(s) do I need? Do you have a fool proof tutorial?
It's a simple process. If something were to go wrong, very low chance, you could buy a cheap $10 video card or put that card in another PC with IGP and flash old bios. Use GPU-Z to make a copy of your original bios. http://www.overclock.net/t/1523391/easy-nvflash-guide-with-pictures-for-gtx-970-980 Possible enabling PCIe 3.0 causes the add on devices such as your GPU to only support UEFI mode and not legacy. In which case there is no display because the old bios does not support UEFI.
Problem solved Appeared to be a bad PCI_E1 slot. Moved the card to PCI_E4 and I got PCIE 2.0 x16 Enabled PCIE 3.0 in BIOS - did not get a black screen at boot - but stayed at PCIE 2.0 x16 Had to activate PCIE 3.0 with force-enable-gen3.exe Now it runs in PCIE 3.0 x16. No difference in games though but OK Thanks for your help and suggestions :thumbup:
