ultravista Posted November 30, 2006 Share Posted November 30, 2006 Upon boot, I get a warning "USB Over Current". EHCI Root Hub Simulation has caused an overcurrent condition. The hub it is attached to has been disabled. Error 0xfd000000 USB is working fine however, just would like to get rid of the error if possible. Link to comment Share on other sites More sharing options...
maisum Posted November 3, 2007 Share Posted November 3, 2007 Umm, the same thing is happening to me... Have you fixed the problem yet? Can someone help... I need some help, I installed Leopard and now im at the step where i press F8 and then -s. I do that, and it does the whole loading thing..goes on and on...and then it says USB Notification: The device "ENCI Root Hub Simulation" @ 0xfd000000 has caused an overcurrent condition. The hub it is attached to has beed disabled I was thinking that ment there was something wrong with my USB port, So i switched it with the one my keyboard was in, said the same thing. Also, when i tried to name my USB drive "Patcher" It changed to "PATCHER". So then I went into 9a581PostPatch and changed PATCH="/Volumes/Patcher/files/leopatch/" to PATCH="/Volumes/PATCHER/files/leopatch/" And that still didn't work. HELP PLEASE! Link to comment Share on other sites More sharing options...
Fiko Posted December 22, 2008 Share Posted December 22, 2008 Having the same problem with the following specs: - Processor: Intel Pentium 4, 3000 MHz (15 x 200) - Motherboard: Asus P4P800 Deluxe (5 PCI, 1 AGP, 1 WiFi, 4 DDR DIMM, Audio, Gigabit LAN, IEEE-1394) - Motherboard Chipset: Intel Springdale i865PE - Memory: 2048 MB (DDR SDRAM) - Bios type: AMI (10/14/04)(1019.005) - GPU: RADEON 9600 SERIES (128 MB) - Sound: Analog Devices AD1985 @ Intel 82801EB ICH5 - AC'97 Audio Controller [A-2/A-3] - Network: 3Com Gigabit LOM (3C940) I cant boot from the tiger dvds because it keeps repeating this error. But leopard iDeneb 10.5.5 and iatkos 10.5.5, they do boot and with the right kernel in installs succesfully. After that it starts to boot into OS from had but it keeps repeating the "EHCI Root Hub Simulation" @ 0xfd000000 has caused an overcurrent condition" error. Any ideas ? Thnx Link to comment Share on other sites More sharing options...
pastakasta Posted January 27, 2009 Share Posted January 27, 2009 I have the same problem, but with Leopard and the system does not boot up after installation. If I install win xp or linux on this machine, everything works fine. Any idea what to to? Link to comment Share on other sites More sharing options...
therisenevil Posted February 15, 2009 Share Posted February 15, 2009 I have the same Problem. If I connect my Keyboard with PS2 rather than USB ist says "Apple ACPIPS2 Nub startup complete and hangs... Ah, I use Leopard, too... Link to comment Share on other sites More sharing options...
grezman Posted January 6, 2010 Share Posted January 6, 2010 hello i am having the same problem. Do you have any suggestions? Link to comment Share on other sites More sharing options...
Cerastez Posted January 4, 2011 Share Posted January 4, 2011 I threw away the AppleUSBEHCI.kext and that fixed the problem for me. My specs and the files I used are in this post Link to comment Share on other sites More sharing options...
Gringo Vermelho Posted January 4, 2011 Share Posted January 4, 2011 You also lost USB 2.0 support. Link to comment Share on other sites More sharing options...
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