Q: No bootable device insert boot disk (El Capitan)

I had windows 7 running on my late 2013 retina mbp but I ran out of space and wanted to repartition to give it more space. However, after getting through the windows 7 setup and installation, when I tried to option boot and select the windows partition (named Untitled for some reason) it just greys out and nothing happens and then proceeds to boot into Mac OS.  I tried setting the windows partition as the default disk to boot into and that is where I got the error stating that there was no bootable device and to insert boot disk. I tried scouring the web for a solution but I can't seem to fix it! Here is some additional information I thought would be helpful -

MacBook-Pro:~ Andrew$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *251.0 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Macintosh HD            141.0 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data                         109.1 GB   disk0s4

/dev/disk1 (external, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *16.0 GB    disk1

   1:                 DOS_FAT_32 WININSTALL              16.0 GB    disk1s1

MacBook-Pro:~ Andrew$ diskutil cs list

No CoreStorage logical volume groups found

MacBook-Pro:~ Andrew$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 490234751

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  275390624      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  275800264    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  277069800         24

  277069824  213164032      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  490233856        863

  490234719         32         Sec GPT table

  490234751          1         Sec GPT header

MacBook-Pro:~ Andrew$ sudo gpt -vv -r show /dev/disk1

gpt show: /dev/disk1: mediasize=16008609792; sectorsize=512; blocks=31266816

gpt show: /dev/disk1: MBR at sector 0

     start      size  index  contents

         0         1         MBR

         1         1

         2  31266814      1  MBR part 11

MacBook-Pro:~ Andrew$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

Signature: 0xAA55

         Starting       Ending

#: id  cyl  hd sec -  cyl  hd sec [     start -       size]

------------------------------------------------------------------------

1: EE 1023 254  63 - 1023 254  63 [         1 -  490234751] <Unknown ID>

2: 00    0   0   0 -    0   0   0 [         0 -          0] unused

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

MacBook-Pro:~ Andrew$ sudo fdisk /dev/disk1

Disk: /dev/disk1 geometry: 1946/255/63 [31266816 sectors]

Signature: 0xAA55

         Starting       Ending

#: id  cyl  hd sec -  cyl  hd sec [     start -       size]

------------------------------------------------------------------------

*1: 0B 1023 254  63 - 1023 254  63 [         2 -   31266814] Win95 FAT-32

2: 00    0   0   0 -    0   0   0 [         0 -          0] unused

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

Here is the USB I used to install Windows 7

I appreciate any help and thanks in advance!