Win XP start-up problem

[Henry]

My comp froze the other night so i decided to press the
power button. Woke up this morning and the comp wont
start up in windows.
First off it does the usual memory test etc ... but after
that it usually loads up that little windows sign but
however this time a black screen pops up saying me to
choose b/w safe mode, safe mode with networking, etc ...
so i choose safe mode (cause i thought it always works).
But then i get directed to a blue screen saying that "A
problem has been detected and windows has been shutdown
to prevent further damage to your computer - UNMOUNTABLE
BOOT VOLUME)
It says for me to fix this hardware/software problem. i
gotta go into safe mode but i cant. I keep goign in
circles. Please help if you can
Kind regards.

 

[John]

Try starting computer up with your WIN XP disk and chose
Repair. Then after you chose the OS to repair and type
your Admin password, type CHKDSK /P at the prompt. When
it is done, restart computer.
John