When I started up my iMac the USB ports stopped working. It didn't respond at all. The weird thing is that they work at the startup when you choose between Windows/Mac OS X when holding in ALT. They also work in Windows, but not in OS X. Does anyone know how to solve this problem?
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I've finally managed to decide (and scrape enough together) to purchase my macpro. I've decided on the base 2.8 which comes with 3 x 1gb ram sticks. I've decided to add two x 4gb sticks from Crucial with the 2 x 1 single sticks in the other ports giving me a total of a 10Gb machine. My only question is I've been told that machines run faster (or RAM works better) when it has evenly portioned between ports. i.e. the same amount in each RAM port.
So in my proposed setup I'd have an uneven portioning of RAM. So my question is: is the RAM even RAM port thing true? And if so would I notice the effect? 10GB should be fine for my needs but if there is an effect with uneven division of RAM would I be better going for 3 x 4GB sticks giving me12GB and simply leaving the 4th port vacant?
I've got a Powerbook G4 that has a booting issue. I will hear the startup "dong" a whirl of the drive, then it doesn't go to the grey screen with the Apple. It just sits there with a black screen.If I wait a few hours and try it, sometimes it starts up fine, or sometimes it will sit on the grey screen with the Apple symbol and do nothing.If it does boot correctly, none of the USB ports work. Any ideas on if its worth trying to repair since its 2 and a half years old and I didn't get the Apple Extended Service plan?
View 2 Replies View Relatedi have searched a lot but haven't been able to solve my problem
i have a windows XP box on my network
i can connect to the C$/D$ admin shares via smb://.... only when the windows firewall is OFF - when i enable it, i can't connect
i have allowed ports 135-139,445 in the firewall, but still no luck
All of a sudden a few days ago, I realized that my keyboard was not working. It was plugged into my 23" ACD. So I unplugged it and put it into my Mac Pro. It worked. So I decided that my ACD's USB ports were not working. A phone call to AppleCare and he told me to take the display for repair to the Apple Store. I just did that, and the USB's worked fine in the store. I take it home, still does not work. So I thought my USB ports on my Mac Pro must be bad. But everything else I plug into all three of the back ones works just fine; but my ACD does not. In the store, he used all of my own cables / power adapter. Why is my USB not working for my ACD but it is for everything else?
View 3 Replies View RelatedI recently went away for the weekend and when I came back my USB ports don't work. When I first start my 24" iMac the mouse lights up but then goes off later on when it's booting up. I really don't know what to do and i'm not even sure if I got any discs with my iMac as it had Leopard preloaded...
View 2 Replies View RelatedWhen I plug a wireless USB receiver for my wireless mouse into my USB drive that mouse will sometimes jump and not work but if i push up on the receiver it starts working perfectly, any ideas on what to do, the receiver is about the size of a thumb drive.
View 2 Replies View RelatedOne of the USB ports are not working is there something I can do at home so I can avoid having to go into the Apple Store?
Info:
MacBook Pro, Mac OS 9.0.x
my usb ports on my macbook pro wont pick up anything i plug into them!
Info:
MacBookPro
All of a sudden my USB and firewire ports quit working-
View 1 Replies View RelatedAnything I insert an usb key in one of the usb ports, i can't see it on my desktop nor anywhere else except via Disk Utility, but there is no way I can access it! any ideas what could be happening?
Info:
MacBookPro, Mac OS X (10.7.4)
3 times in the last week, my 400 & 800 firewire ports are not working. I am using a firewire hub with several external drives. I unplug everything, reboot and then they work. anyone know what is going on?
Information:
Power Mac G5
Mac OS X (10.4.2)
Both my firewire ports are not working. No signal or connection with external hard drive or video camera. Firewire does not appear under Network Status and is grayed out under Network Port Configurations.
Information:
PowerMac G5
Mac OS X (10.4.11)
I have a aluminum iMac, which has been working fine until now. A couple of hours ago I restarted it and went and did something else for a couple of hours. I then came back to find my keyboard and mouse not working, I double checked and they were both plugged in fine (I use the aluminum apple keyboard and a kensington mouse). I restarted my computer but it still did not fix the problem (I was still stuck at the login screen). I thought it might be the USB, so I plugged my iPod in, and it did not charge. While my iPod was still connected to my computer I restarted it again and as soon as the screen turned grey my iPod started charging and my mouse worked (the light turned on), but only until the grey apple logo appeared and it then stopped working again. I have tried every USB slot and none of them work. I'm pretty sure my computer was completely updated as well.
View 3 Replies View RelatedI've got a macbook pro unibody and basically of the two usb ports. The lower one is working fine
but the top one is acting a bit funny. If I put my mouse or graphics tablet in there it doesn't work but if I put my phone or usb drive in there they work perfectly.
My USB ports stopped working after a reboot. I have rebooted multiple times and have full updates. printer and usb mouse dongle dont work on ALL SUB ports on my MBP. I installed fresh version REAL of OSX 10.5.5 I bought. 3 months later and now I have this small hickup. Recent install was XAMPP. My USB ports on my MacBook Pro stopped working. (Read error codes at end of message). To test if they are completely dead I did the following:
I boot up, and I move the mouse around waiting for the mouse to wirelessly talk to the USB port mouse dongle. As the desktop is loading, they pair, the mouse moves a few inches and then stops (seems to stay on for only 2 tenths of a second), then the port dies. So I assume the driver for the port is turning on, then immediately off. I have the following error in my Console when I unplug then plug in the mouse USB dongle:
10/9/08 10:53:10 AM kernel USBF: 164149.607 AppleUSBEHCI[0x4167000]::Found a transaction which hasn't moved in 5 seconds on bus 0xfa, timing out! (Addr: 2, EP: 10)
10/9/08 10:55:11 AM kernel USBF: 164270.621 AppleUSBEHCI[0x4167000]::Found a transaction which hasn't moved in 5 seconds on bus 0xfa, timing out! (Addr: 2, EP: 10)
10/9/08 10:57:12 AM kernel USBF: 164391.635 AppleUSBEHCI[0x4167000]::Found a transaction which hasn't moved in 5 seconds on bus 0xfa, timing out! (Addr: 2, EP: 10)
What is the terminal commands needed to reinstall the default USB port drivers for OS X 10.5.5?
Recently I changed my 4-port USB hub for a 7-port hub. Now 2 USB ports are dead, and the third port will only accept self-powered devices, such as external drives, a printer, or memory sticks. I dare not plug in a hub, so I am faced with a lot of plug-swapping.
View 3 Replies View RelatedThis just started about a month ago. When it first occured, I could restart the laptop and the ports would work. Now, no luck. Mac OS X - 10.6.8
View 9 Replies View RelatedOne of the 2 USB ports has suddenly stopped working and will not recognize any device.
Info:
MacBook Pro (13-inch Mid 2010), iOS 5.1
My front firewire 400 and 800 ports abruptly quit working. THe backs work fine. I've tried two different video cameras and an external hard drive and according to system profiler none are recognized and none are accessible.
I have had an intermittent problem. Every so often (once a month), my iPhone will not connect to my computer, it does not charge, nor does it show up in iTunes. I checked out 3 different cables, and none work (cable problem eliminated), I tried 3 different iPods, none charged or showed up (iPhone and iPod problem eliminated). I tried both the front and the rear USB ports and nothing ever happens. As far as I recall, this problem just cures itself after a few days. Any idea what I need to have repaired to stop this maddening problem?
Information:
Power Mac G5
Mac OS X (10.5)
2.3 GHz, 8GB RAM, 8GB iPhone, Dual Sony SDM-HS95 monitors, PowerBook G4
I have a 2006 Mac Pro and recently my firewire ports stopped working (front and back). I did a little searching around found a suggestion to try resetting the Mac's PRAM and NVRAM by holding the Cmd-Option-P-R keys down while booting. I have tried this numerous times and it doesn't seem to do anything (i.e. the Mac just loads OS X and doesn't re-boot like the instructions say). I'm using a MS Wireless Comfort Keyboard for Mac. Can you reset using a wireless keyboard?
Since I wasn't making any progress with that, I was toying with bringing in the Mac to a genius bar. Never having used the genius bar before - how does it work? Do I bring the computer in and leave it with them? Do they work on it while I'm there? I don't have an extended warranty so do they charge time and materials? I'm wondering if that might get awfully expensive and if I ought to just buy a PCI-X firewire card instead.
Any suggestions?
I have a 2006 Mac Pro and recently my firewire ports stopped working (front and back). I did a little searching around found a suggestion to try resetting the Mac's PRAM and NVRAM by holding the Cmd-Option-P-R keys down while booting. I have tried this numerous times and it doesn't seem to do anything (i.e. the Mac just loads OS X and doesn't re-boot like the instructions say). I'm using a MS Wireless Comfort Keyboard for Mac. Can you reset using a wireless keyboard?
Since I wasn't making any progress with that, I was toying with bringing in the Mac to a genius bar. Never having used the genius bar before - how does it work? Do I bring the computer in and leave it with them? Do they work on it while I'm there? I don't have an extended warranty so do they charge time and materials? I'm wondering if that might get awfully expensive and if I ought to just buy a PCI-X firewire card instead.
This morning I've installed OS Snow Leopard 10.6.3 on my iMac, previously I had OS Tiger 10.4.11 running. Everything seemed fine until I restarted and then I started getting "USB drawing too much power" promps all over the place even though the only thing that's attached to the iMac is the keyboard and the mouse (they both work fine). The process went like this:The iMac is a 2.4 GHz Intel Core Duo from october 2007First I did an upgrade of my RAM, from 1GB to 2GB, that went ok.Then I runned the install dvd for Snow Leopard, I did not perform a clean install, just did it over my old data. After restart, everything worked but i got this USB warning message, one of them. At that point my usb's still worked, (even though the warning) I could print and scan. To get rid of the warning, i resetted the PRAM and SMC. After doing so, the promps multiplied and my usb ports ceased working, except for the keyboard and the mouse attached to it.I've done the Apple Hardware Test, and it gives no malfunctions.Firewire works fine, Isight buildt-in camera and bluetooth too.I've tried all usb's and the keyboard will work in all of them, not like my printer and scanner which are completely ignored.USB power warning also appears at restart with no deviced connected (no keyboard and mouse, i've tried).I've also found in many forum entries the possibility of a problem on the logic board, but since i've never had a problem with my imac until today i would not be sure about a hardware malfunction.The last thing i've found around that could be a clue is something about the kernel extensions, but that's complete chinese for me, I'm a mac plug&play user and not too much of a mac expert.
Info:
iMac, Mac OS X (10.4.11)
My friend just got a 1.25GHz MDD but he says he is having problems with it. He says that when he starts it up, his mouse light (sensor) flickers and the keyboard does not work. The only way to fix this is to unplug and replug in the peripherals. He also tried on his Studio Display connected via ADC and the same thing happens. Could a PCI USB card help his problems or is there some way to fix the current USB ports?
View 1 Replies View RelatedIf so, do you use them and what sound system do you have?
View 2 Replies View RelatedI have the latest build of Parallels 3.0 (build 5636). I use Windows Vista Basic through the Boot Camp partition. Parallels launches Windows with no problems. However, when I try to boot Windows Vista Basic through Boot Camp, the black screen with the green bar and the Microsoft Corporation copyright appears, and then before it switches to the next screen, I get a split second blue screen of death and then the computer reboots itself. I video taped the incident, but since the blue screen of death scrolls the message onto the screen, the computer rebooted before it could tell me what specific file may be corrupted.
I've already tried the following:
1. Booted the computer with the Windows installation DVD to do a "start up" repair attempt.
2. Created a new virtual machine.
3. Done a system restore to before the new version of Parallels was installed.
There was a time when Parallels froze and I had to "force quit" it. That could have corrupted something with the Boot Camp partition. Could that be the case?
Running win 7 pro 64 and I am getting TV.
View 2 Replies View Related1) Can you boot into XP and/or Vista (using bootcamp) from the SATA ports on the system board?
2) What are the transfer rates (input and output) on these ports?
3) Does using these ports in conjuction with a Mac Pro RAID Card affect the transfer rates/latency of the drives connected to the RAID Card?
I got a brand new macbook air and want to set up an original Windows 8 DVD via bootcamp.
Problem: my external DVD needs 2 usb port connection so I want have a chance to plug in an usb drive at the same time. Any other choice to get along?
Info:
MacBook Air (13-inch, Early 2014), iOS 8.1.1
