With AppleIntelHDGraphics.kext (and related files, see below*) installed, which I believe iATKOS did at my request, the computer could only boot in Safe Mode (and then, obviously, it was not getting graphics support).
If I remove these kext files and use the repair utility in Kext Wizard, the computer boots up fine, except again there is no graphics support. So now I want to fix this issue, and get these kexts working correctly.
Is it worthwhile to download AppleIntelHDGraphics.kext from the Internet and try to install that copy? I tend to assume that all copies of it are going to be the same thing, but I could be wrong. Or does something more involved have to be done?
For reference, the last few lines I get from the verbose printout when AppleIntelHDGraphics.kext is installed are as follows.
BSD root: disk0s2, major 14, minor 1 Kernel is LP64 com.apple.launchd 1 com.apple.launchd 1 *** launchd has started up. *** com.apple.launchd 1 com.apple.launchd 1 *** Verbose boot, will log to /dev/console. *** Running fsck on the boot volume... ** /dev/rdisk0s2 (NO WRITE) ** Root file system Executing fsck_hfs (version diskdev_cmds-540.1~34) BootCacheControl: Unable to open /var/db/BootCaches/PreheatedUser/Merged.playlist: 2 No such file or directory BootCacheControl: Unable to open /var/db/BootCaches/PreheatedUser/Login.playlist: 2 No such file or directory macx_swapon SUCCESS Waiting for DSMOS... nstat_lookup_entry failed: 2 nstat_lookup_entry failed: 2 Previous Shutdown Cause: 3 DSMOS has arrived ACPI_SMC_PlatformPlugin::startForReal - waitForService(resourceMatching(AppleIntelCPUPowerManagement) timed out Transcript Offline - Buffer Pool Allocate  failed █At which point it hangs
- Intel Core i3-2330M
- Intel HD 3000 integrated graphics
* I also removed files from S/L/E that seemed related to the HD Graphics. A full list: