4k monitor mac pro 2013 not showing up drivers#
4k monitor mac pro 2013 not showing up driver#

These two LEDs can operate in two different modes they will either flash or stay on. They do not depend on the DIAG_LED button being pressed. If the CPU Error LED follows the CPU, replace that CPU. Reinstall the battery and restart the computer. You may need to remove a PCI Express card to get to the battery. Unplug the AC cord and remove the battery for 10 seconds. Overheated memory could be a possible cause for this CPU error LED to come on. If this causes the LED to go off, repopulate the DIMMs and/or PCI Express cards to find the combination that caused the LED to come on. Unplug AC cord and remove any added DIMMs and PCI Express cards. Reset the power supply by unplugging the AC cord for 10 seconds. If the Error LED is still on, power down the computer and try resetting the SMC.

4k monitor mac pro 2013 not showing up driver#

If this clears the CPU Error LED, check for incompatible device driver software that may have been installed for added hardware. With the computer booted, up press the SYS_RST switch. If the BootROM is corrupted, the optical drive tray should eject, prompting for the insertion of a recovery disc to restore the BootROM. Related symptoms include no video or the computer is hung up. These LEDs come on if an error occurs or if the BootROM is corrupted. If LED 2 is not on, the symptom would be that the computer wonвЂ™t power on.Д¬heck AC cord is connected to a working AC wall outlet.Д¬heck connections of power supply cables to the logic board.Д¬heck power supply cable connections at power supply. Normally on when DIAG_LED button is pressed. To press the DIAG_LED button, use the nylon probe tool (Apple part number 922-5065).

To read LEDs 1, 2, 7, 8, and 9, you must press the DIAG_LED button, which is adjacent to the LEDs.

LEDs 3, 4, 5, and 6 are normally off and will automatically illuminate if an error occurs. The LEDs are located on the logic board between the two DIMM riser card connectors. The Mac Pro (Early 2008) logic board includes a set of LEDs to help service providers troubleshoot the computer. The memory riser card diagnostic LEDs will also flash briefly when the computer is started up or shut down and when it goes in and out of sleep mode. Do not count this light as one of the diagnostic flashes. *Note: The status LED lights up when the power button is depressed at startup. Check memory installation instructions for proper installation order. Troubleshooting: Try reseating the memory DIMMs.

An LED will light up on the memory riser card corresponding to the affected DIMM. An LED will light up on the memory riser card next to the affected DIMM or empty DIMM slot.ДЈ Flashes: A RAM bank failed extended memory testing. If the test detects a problem, the status LED located above the power button on the front of the computer will flash in the following ways*:ДЎ Flash: No RAM is installed or detected. Power-On Self Test: RAM and Processor VerificationДЄ power-on self test in the computerвЂ™s ROM automatically runs whenever the computer is started up after being fully shut down (the test does not run if the computer is only restarted). Unplugged everything and restarted.still nothing.ДЄndrew Taylor, here are a couple things that may help to further trouble shoot:' Then ran OS X installer and installed Yosemite on the newly-formatted HD in the MP. I immediately got the 'The disk you inserted is not readable.' dialog on the MBP and used Disk Utility to format it. Today, I connected my MBP to one of the machines via Firewire and started the Pro in Target Disk Mode.

4k monitor mac pro 2013 not showing up drivers#

Is it because there's no drivers on the brand-new hard drive?ДЇor what it's worth, I opened up the case and started each machine, and I see no LED indicator lights anywhere inside (I think there are supposed to be some, but I don't know where). I don't understand why I'm not getting any video (and no video is making it hard to troubleshoot anything else). But I get no video from either machine (I have two monitors plugged into each - one via HDMI and one via VGA). I bought a couple of new hard drives and a couple of new (MSI F5450 MDIGH) video cards, installed one of each into each of the two Xeon machines, and pressed the button.Д«oth machines turn on and the power lights are on steady. None of the machines had hard drives or video cards. The Xeon machines are the ones I'm trying to resurrect. Of the three I picked up, one turned out to be a dual-processor G5 machine, and the other two are dual-processor Xeon machines. I recently came across what seemed like a good deal on a handful of 2008-era Mac Pro desktop machines.