Hello all! So my Mid 2010 MacBook required a PRAM reset after it started acting strange (got itself stuck in a bit of a boot loop with the Recovery HD, so to get out of it i tried a PRAM reset), however ever since then my MacBook will NOT turn on the screen AT ALL until OS X has loaded, the only way i could even find out that the screen wasn't faulty was to boot up a old Lion DVD i made a while back because once that loaded the screen sprung to life (I let out a sigh of relief!) But this means i can no longer take advantage of things like FileVault and such because as well as the screen being off now at boot, the Mac doesn't seem to respond to anything other than me pressing the C key to boot a disk, or the Mac booting the main hard disk. Has anyone experienced this type of problem? Even in OSX i have no brightness control and i don't remember the MacBook ever listing the display as "SPDISPLAYS_DISPLAY". I thought maybe a few system files had gone bad, so i took advantage of the Lion DVD i had made a while back and just did a fresh install (for anyone wondering its just the InstallESD from the Lion installer, burnt to DVD, no shady business) but still the same. Don't get me wrong, the MacBook works otherwise, the Nvidia 320M is fully recognised and usable. Any info on this would be appreciated! Heres what i have already tried, SMC Reset (10+ times (not all at once of course!)) NVRAM Reset (10+ times (not all at once of course!) Removal of battery from MacBook and waiting 30+ minutes Trying with no battery and just magsafe Entirely new installations of OSX (Tried Lion, Mountain Lion and Mavericks) Inspected hardware itself, cables are all connected, inverter is fine because screen works perfectly when OSX has loaded!