Black boot up screen!!

[sikkinixx]

I just installed the new security update on my mbc and now the damn thing wont start up! when i power on, the machine is running, i can feel the hdd spinning etc, and the screen turns on, just it is black or a very dark grey. No apple logo, no "ta-da!" sound....whats going on?!

Do i use the Tiger DVD?


edit: YAY! after resetting everything else, resetting the PRAM did it!!

 

[sikkinixx]

tried the DVD and it won't load it up, although the drive is spinning....

 

[markiv810]

tried the DVD and it won't load it up, although the drive is spinning....

Does the power led keep on flashing, either the power supply has a problem or the ram. I had a similar problem but that was due to faulty ram

 

[Shadow]

I had this exact same problem (albeit now when installing security update). On startup hold Command-Option-P-R until the grey screen appears.

 

[iJUNKY]

hi, don't mean to thread-jack, but i'm havind a pretty similar problem

https://forums.macrumors.com/threads/222673/

this only started to happen last night.

weird