Machine won't boot with 2 video cards Tags: Graphics Cards Boot Graphics Last response: May 16, 2010 7:53 PM in Graphics & Displays Share hyzerfool May 16, 2010 2:11:40 PM I'm trying to add a second video card so I can go from 2 monitors to 3. I only have PCI or PCIe x1 slots available. Existing video card is nvidia 7300 GS (PCIe x16) New card is Sparkle nvidia GeForce 8400 GS (PCI) Machine boots fine with either one in by itself. When I try to boot with both cards in, I get message telling me that no boot device was found. Motherboard is Intel DP35DP w/ 8 GB of RAM Power supply is Antec BP550 plus OS is Windows 7 64-bit, but that shouldn't matter right now as I can't get to the OS... My first thought was a power supply issue. The machine has 3 hard drives (2 in RAID array), I disabled the 3rd hard drive and the DVD drive (to reduce power load) but got the same result. I haven't found anything in BIOS that looks particularly promising. I'm at a loss. Any suggestions? More about : machine boot video cards juicycrapachino May 16, 2010 3:17:09 PM Did you connect the SLI bridge properly? Double check that and also it might be the slots of each card. One is PCIe x16 and other is PCI, that might be the issue...But I'm not %100 sure... Rustyy117 a c 124 U Graphics card May 16, 2010 3:21:14 PM juicycrapachino said:Did you connect the SLI bridge properly? Double check that and also it might be the slots of each card. One is PCIe x16 and other is PCI, that might be the issue...But I'm not %100 sure... You cant run a 7300 GS and a 8400 GS in SLi Can't find your answer ? Ask ! Get the answer hyzerfool May 16, 2010 7:53:04 PM Yes, not trying to do SLI. I believe SLI uses 2 cards to drive 1 monitor. I want to drive 3 monitors. Can't find your answer ? Ask ! Publish Related resources: ForumMachine Won't Boot . Powers on, No Video ForumAsus P8Z68-V: Machine won't boot ForumMachine won't boot after installing SP 2 . ForumE- Machine Am37-L motherboard wont post, boot ForumSY-P4I865PE Plus Dragon 2 new machine wont boot ForumSY-P4I865PE Plus Dragon 2 new machine wont boot ForumMy cpu wont boot when my hd5770 video card is inserted ForumDell GX620 wont boot with new video card ForumDell E521 - Questions about video card upgrades for this machine . ForumPC Won't boot (With Video ) ForumA8M 2 N-LA (HP Pavillion A1730N) wont boot , no beeps ForumWin 7 won't start after new video card installed ForumGTX 690 wont boot to Windows 7 ForumATI 1600 PRO 512 - DELL 8250 - Machine won't boot ForumMoved my e- machine k52f now it wont boot just goes beep beep beep every 2 -3 seco ForumAsus gtx560ti directcuII-broken ForumAsus graphic card EN8400GS game play video ForumVideo Card Memory Interface- Real World Performance? ForumCrossfire with EVGA X58 SLI Le ForumInstalled new video card now I have NO display More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !