Biostar

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

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

http://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.

Please follow these suggestion to check if motherboard cannot boot up properly.

1. Check 24 pin and 4 pin power cable connect properly on motherboard.

2. Clear CMOS for the motherboard to restore BIOS setting.

3. Insert VGA card. Some of CPU might not have build-in VGA support, so it might need VGA card to let system POST properly.

4. Remove and insert CPU to make CPU socket contact better. Check if CPU is listed in CPU support form from Biostar website.

5. Do not use memory module with different brand and speed mixed up. Change memory module see if it's memory support problem.

If non of the suggestion above can help, please contact local dealer or computer shop for a check up.

This problem could cause by DVD driver too old. Please update DVD drive's firmware to latest version or change a new DVD drive to support AHCI mode to install Windows 7.

AMD Athlon X4 750 CPU is 100 watt, also CPU will running at full speed under BIOS setup screen.

So CPU temperature might get hot if use CPU cooler not design for support 100 watt CPU.

We suggest to use copper base CPU cooler if use Athlon X4 750K CPU on TA75MH2 motherboard.

If there is any problem to install Windows 7, please update latest BIOS on website for J1800NH.

Also download latest driver for support Windows 7.

http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=688#dl