First off, I just want to say how sad I am to hear that the DZ87KLT-75K is going to be Intel's last motherboard. I've owned several over the years, and they've provided me rock-solid stability to the point where I use them until they become obsolete with very few problems.
Just completed a new build this weekend and went to go get the drivers installed for this motherboard for Windows 8.1 Pro 64-bit, and it appears that most of the drivers are already rolled-up into Windows - cool. The three devices I'm having issues with are:
(All showing yellow exclamation mark in Device Manager.)
- Audio Device on High Definition Audio Bus
Reinstall the drivers for this device. (Code 18)
To reinstall the drivers for this device, click Reinstall Driver.
HDAUDIO\FUNC_01&VEN_10EC&DEV_0899&SUBSYS_80862046&REV_1000\4&3B8CA585&0&0201
Attempting to install drivers (AUD_Win8.1_Win8_Win7_XP_6.0.1.7040) off of Intel site eventually gives:
Realtek High Definition Audio Driver - InstallShield Wizard
Install Realtek HD Audio Driver Failure !!
[Error Code: 0xE0000246]
And that error traces back to the following from Technet:
3758096966 (0xE0000246) Device Installer Not Ready
Cause
A class installer or a co-installer for a service cannot run because a component on which it depends did not run.
- PCI Simple Communications Controller
This device is not configured correctly. (Code 1)
To find a driver for this device, click Update Driver.
PCI\VEN_8086&DEV_8C3A&SUBSYS_20468086&REV_04\3&11583659&0&B0
Attempting to install drivers for Intel(R) Management Engine Interface (MEI_Win8.1_1.5M_9.5.15.1730_PV) off of Intel site eventually gives:
The setup program failed to install one or more device drivers.
Setup will exit.
(Intel Installation Framework page shows "Installing Driver: Intel(R) Management Engine Interface - Version 9.5.15.1730")
- SM Bus Controller
Reinstall the drivers for this device. (Code 18)
To reinstall the drivers for this device, click Reinstall Driver.
PCI\VEN_8086&DEV_8C22&SUBSYS_20468086&REV_04\3&11583659&0&FB
Attempting to install drivers for associated package (IDU_3.2.8.089 containing smbus drivers) off of Intel site eventually gives:
An unknown error has occurred.
Setup will exit.
(Intel SMBus window shows "Installing Driver: Intel PCH SMBus Controller - 8C22 (Intel SMBus 2.0 Driver) - Version 6.9.1.1")
The Audio Device is obviously the Realtek, because I had it disabled in the BIOS from the start prior to the Windows clean-installation, and only just enabled it after the second two drivers showed the driver failure in Device Manager.
I'm concerned, based on the errors I've received installing most (90%) of the drivers marked for Windows 8.1 64-bit on the Intel web-site under my motherboard, that I may be missing some crucial main chipset driver, which is holding all of these other drivers and software application packages back.
Here's my hardware configuration:
1) Intel DZ87KLT-75K Motherboard with: AA G74721-305 - BIOS is current: KLZ8711D.86A 2/17/2014 0450
2) Intel i7-4771 (Stock heat-sink and fan from retail packaging)
3) Seasonic X-Series Gold 80 850W Power Supply
4) Kingston Hyper-X 4x 8GB DIMMs (2x 1600 CL10 240-Pin UDIMM Kit - KHX1600C10D3B1K2/16G)
5) Four SSD (500/256/256/128), Two SATA 4TB Seagate drives.
6) XFX R9 280 Black OC Edition Graphics Card
7) Corsair Obsidian 650D with two 200mm fans, and one 100mm fan.
I've ran burn-in tests for an hour or so, and temperatures seem within the happy range on all devices monitored.
Please let me know how I can fix these errors, as I'd rather not put this system into production as my main workstation if I have to rip it apart to replace the mainboard.