Bronxteck

looks like it usb related. try using usb2 ports if possible. or switch to usb2 in bios during install for now if you can.

how about with clover boot loader.

yup sounds about right.

so put the old one back till they find the solution

go to bottom left section of clover configurator app select theme tab then on bottom right click load themes /partition select your target partition on top right then choose a theme, then click apply to nvram.

watch out for your patched appleHDA

you can use clover configurator or or this way https://clover-wiki.zetam.org/Theme-database

you might have to inject your device id's into the atheros kext

is it still randomly freezing? also check what version of clover is booted.

well will it boot of your usb clover?

use a usb mouse and keyboard if you have one or install the correct kexts for keyboard and trackpad for your machine.

only 64 bit windows7 has correct uefi support after the last service pack. if your install disc is too old you might have to create a new one.

you can try with darwin dumper app. it has a vbios extract feature and i think clover also. if using clover press F1 it should give you a list of options.

thats odd since it is normally installed with the CLOVER installer. reinstall clover and check the custom box then make sure install clover preference pane is checked you should not have to touch any other options yet. and install.

i think when you partition in OS X half HFS and half FAT it makes a hybrid GPT disk. instead leave it as unformatted partition and try. did the EFI option show up? if not try turning on UEFI in bios for install.

use the F12 boot selection menu and see if the windows installer shows as an UEFI option then choose it.

are there 2 EFI folders? that does not look correct it should be 3354 also clover does not have periods in the number sequences. click the clover prefpane in settings.

oh i see bios A15.... your sure it does not have optimus graphics right?

what happens if you try the E6230 files then? might have to patch graphics though.

ahh yup just checked on Intel site. i didn't know the Exx30 came with sandy option. check in bios it might state the model.

why are you using the E6220 when he has a bootpack for your model

i have 0x67 for CsrActiveConfig and i get EliteBook's-MBP:~ Me$ sudo csrutil status Password: System Integrity Protection status: disabled.

did you rebuild you cache's? or boot with the option to boot without caches in clover? hit space bar at clover selection menu

well you need to learn the inner workings of your machine some day. if you do not feel comfortable and you do not have another machine to bail you out. split your drive with disk utility and clone your partition to the new partition. you can then experiment with one and still have a working os for the OH SHIT!!! moments in life. well unless you totaly screw up the bootloader but then i guess you can boot off a usb.

well it says its missing essentials package so maybe add it to the usb or you need to download a new os installer if its too old the certificate is expired and the installer will not install without setting the year back on the machine to when the certificate was valid.