basically i start up my laptop, and it doesn't get to open windows, because
it says (on a black screen) that the following file is missing or corrupt:

\WINDOWS\SYSTEM32\CONFIG\SYSTEM

i tried to run the recovery console, and tried to follow the first prompt
(according to the instructions on artilce 307545) like so:

md tmp

turns out, that my access is denied...i checked whether there's an
administrator password that i can type, but it seems like there isn't one (i
checked that in the boot up menu/settings or something right at the beginning
of start up)..

SOMEBODY PLS HELP! my laptop was working just yesterday!!