mshatkus Posted August 30, 2013 Share Posted August 30, 2013 So my initial thought was that the black screen was due to updating to 10.6.8. I have tried everything I could find on the internet for tricks to fix this black screen. I finally said forget it let me try installing a fresh 10.6 (with a fresh HDD) and just follow a guide. So I installed a new 1TB blank HDD. I went into the BIOS to set the normal settings (AHCI...yada) and before I could even finish there was screen went black. Which right there it cannot be from the result of updating to 10.6.8 (o yeah before trying the new HDD, I removed the CMOS battery to erase all settings to start fresh). So this leads me to believe I had a hardware problem. Does anyone have any ideas on what it could be or how to troubleshoot this. I thank you in advance Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/ Share on other sites More sharing options...
FaefLemon Posted August 30, 2013 Share Posted August 30, 2013 Tried with the "colors=32" flag? Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1942387 Share on other sites More sharing options...
mshatkus Posted August 31, 2013 Author Share Posted August 31, 2013 I have not, but do you think that could be possibility? I mean my most recent troubleshooting I flash the bios, re-did all typical BIOS settings and had a HDD that was blank and still got a black screen even before I finished the BIOS settings Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1942521 Share on other sites More sharing options...
mshatkus Posted September 1, 2013 Author Share Posted September 1, 2013 no luck Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1942655 Share on other sites More sharing options...
Hangten Posted September 1, 2013 Share Posted September 1, 2013 Have you tried using VGA port or DVI or swap the HDMI? Try booting in safe mode -x Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1942749 Share on other sites More sharing options...
RobertX Posted September 2, 2013 Share Posted September 2, 2013 ...could it be a faulty monitor/display? ....going black while in bios setup seems hardware related to me... Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1942861 Share on other sites More sharing options...
mshatkus Posted September 20, 2013 Author Share Posted September 20, 2013 My video card is dual DVI and yes I have tried both. Same result. Also it's not a faulty monitor becuase I have tried multiple. Even my master bedroom TV (40" Samsung LCD) connected with DVI to HDMI and same result. I have not tried booting into safe mode yet, but will try that tonight. Thanks for all the input Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1947248 Share on other sites More sharing options...
kvonlinee Posted September 27, 2013 Share Posted September 27, 2013 you boot with the usb device that show up the installation. then you run in the terminal ioreg -l | grep -15 "AppleACPIPCI\ " | grep UID to get the correct value for the PCIroot=? credit to this one go to http://olarila.com/forum/viewtopic.php?f=28&t=154 on my the xps 410 Dell the value is 4. hope this help you. Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1948948 Share on other sites More sharing options...
Guest lefandegta Posted October 22, 2013 Share Posted October 22, 2013 Hi, I've got the same video card (GTS 250) which works perfectly under 10.6.8. I'm trying to install Mavericks now, Chameleon works good, I've got no kernel panics. The problem is: at the end of the loading part the screen goes black (which is normal) but instead of waking up to OS X Installer after 2 or 3 seconds it just stays black and says no signal... Do you have any ideas? Thanks Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1956717 Share on other sites More sharing options...
denbie Posted October 27, 2013 Share Posted October 27, 2013 lefandegta, have you tried all of your graphics cards connectors? I have had the very same problem when installing Mavericks. Black screen and no signal on both of my workplace TFTs connected by DVI and VGA. When I connected the PC to my TV by HDMI the installer screen showed up. Unfortunately have not found a solution for this... Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1959492 Share on other sites More sharing options...
ico Posted October 28, 2013 Share Posted October 28, 2013 Hi I am running Acer 8940G with Mavericks GM on one Hard Disk fully functioning Graphics NVIDIA GTS250m utilizing Geforce Kexts. On the other Hard Disk I am running Mavericks directly downloaded and installed (Vanilla) I added all the Geforce Kexts from DP9-GM plus booting with PCIRootUID=0 and got graphics Full HD only problem now is that neither Quicktime nor VLC or any other video player plays any type of video file the apps just crash. graphics and everything else runs like a charm. Link to comment https://www.insanelymac.com/forum/topic/291560-geforce-gts-250-black-screen/#findComment-1959839 Share on other sites More sharing options...
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