Biostar

Please refer the document from Microsoft, it will fix the DVD drive detection problem in Windows 8.1 system.

http://support.microsoft.com/kb/314060/en-us

Our H81 series motherboard will only support stardard 1.5V DDR3 memory module.

There are some issues between Ubuntu 12.04 system with Intel NM70 chipset.

Please make sure to update to latest Kernal core or add the patch for on-board graphic.

Try to add "i915.i915_enable_rc6=0" to /etc/default/grub "GRUB_CMDLINE_LINUX_DEFAULT". Should look something like this then:
Code:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.i915_enable_rc6=0"
Then run:
Code:
 
sudo update-grub
And reboot. 

Here are some requrement for support USB 2.0 with it's full speed.

1. Make sure the Windows XP system update to Service Pack 3.

2. Make sure USB front cable in PC case will support USB 2.0 specification.

3. Make sure USB device will support USB 2.0 spcification.

Yes, Hi-Fi Z87W will support latest Intel i7-4790K CPU.

Please update the latest BIOS from our website download page for support it.

https://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=646#dl

Hi-Fi A88W 3D motherboard with FM2+ CPU will be able to support 4K/2K display.

However, FM2 CPU will not support 4K/2K display when use on this board.

Windows 8.1 already has USB 3.0 driver build-in. So there is no need to install USB 3.0 driver for it.

Yes, Hi-Fi Z97W will support SSD in NGFF spec.

Our motherboard and BIOS on Hi-Fi B85N3D already support Intel VT-D function.

It also need to use proper Intel CPU to support VT-D at same time.

Windows 8.1 already has build-in AHCI driver.

So you can use build-in AHCI driver for install Windows 8.1.