chiemcan

I did that and the result shown in attach image

After a few second boot with apple logo, it show a black screen with a white circle and 1 cross ( attach image) and stop here.

Hi Jake, I patch your DSDT and SSDT file you gave me. But I don't boot to MAC OS X, display show a circle with a cross.

I had installed AppleHDA_ALC255. Can you guide me Codeccommander? Thanks!

Information of Dell Inspiron 5458: CPU:5250u. Chipset:Intel Wildcat Point-LP, Intel Broadwell. VGA:Intel HD 6000. Sound:Realtek ALC255. Wifi:Intel Dual Band Wireless-AC 3160 AC. LAN:Realtek RTL8139/810x. Touchpad:Synaptics HID. I have setup el capitan. But audio and display brightness don't work. DSDT and config.plist in attach file. Can you help me? DSDT 5459.zip

My laptop is Dell inspiron 5458, i5 5250u, intel hd 6000. I have changed DVMT to 96MB (setup_var 0x15b 0x3) but in Windows 10 it still 128MB. And I have created an USB install el capitan (E7450 guide) but I can not boot to install. I have done ""Boot Mac OS X in verbose mode", 4s later, my laptop restart and boot to Windows 10. Do you help me?