lost my 120 gb hard drive

ok let me explain what i had and now what its showing

first i had a C drive of 80 gb
d drive of 120 gb
a cd burner
and a dvd rom drive

got a dvd burner today and took out the dvd rom drive.........same jumper settings so no problem there

now i restart

i get a C drive of 80 gb
the DVD burner is now my D drive
and still have my cd burner

my 120 gb hd is missing

looked in bios and its reading it as my primary master
so i dunno........anyone with knowledge??

heres what it was prior to me installing my dvd burner
cd burner was set on slave
dvd rom was set on master
D 120 gb drive(the one that is missing) not sure what it was set on but
::::: were the settings and it was the 4th one if u read like i typed it
C drive was a lil weird as it was sidways at the bottom on my jumpers
:::::
columns 3 and 4 row 2 if read like an chart

any help will be welcomed

 

Check to see if you accidentally loosened the power plug or the ribbon cable on the hard drive.

 

nah i didnt, then later i unhooked everything and rehooked it back up and still isnt finding it

 

thanks guys but i found em and figured it out

strange this is on my C drive the drive with my OS the jumper settings were on the bottom row a few notches over not up and down like usual.........it worked b4 i installed the dvd burner but didnt after so i just switched it to slave and my 120 to master

got it running thanks for the help guys