older, end of year 2017 post unanswered,
sure, and is good post. too,
lots of facts told by you. VG !
PC model stated, Very good,
OS, w7-64 (amazing you are like 1 in 1,000,000 post with this fact)
here is your answer, as is true for all PCs made
you first need the USB drivers in the PC working prefectly or the camera will be dead
then the DELL drivers for this this exact PC loaded, and only DELL has those, not fixya, nor MS< nor others.
only DELL.com has them.
amazing fact 2nd google hit lands me here
http://www.dell.com/support/home/us/en/04/product-support/product/inspiron-1464/drivers
go there, run the detect,
or load all the correct driver there and it will work
unless the PC is infected with virus, as that kills anything,.
did you upgrade from VISTA ,if yes, that be #1 first fact to tell.
for sure. and if yes, HOW?