Trick to change the win 7 logon screen background

open run
enter command regedit
then follow the path [ H K E Y _ L O C A L _
M A C
H I N E \ S O F T W A R E \ M i c r o s o f t \
W i n
d o w s \ C u r r e n t V e r s i o n \ A u t h e
n t i c
a t i o n \ L o g o n U I \ B a c k g r o u n d ]
then double click the oembackground key
and set
value to 1
now head over to C:\Windows\Syst
em32\oobe
\info\backgrounds
ifinfo and backgrounds folder are not ther
then create it....
copy your image in backgrounds folder and
rename it as background Default
IMAGE MUST BE OF JPG FORMAT AND LESS
<= 256 KB
Reboot the system and then
Hopefully works for all......