Bootcamp Broken after Resizing and OSX Update

Hello, so after updating to Yosemite 10.10.3, my bootcamp partition, which was previously resized, has become unbootable. I can't read the partition in finder and can't see it in Startup Disk. It, however appears as "disk0s4" in disk utility. I've posted some outputs of commands suggested in another thread. Hopefully this will help fix this issue.

Adams-MacBook-Pro:~ Adam$ sudo fdisk /dev/disk0

Password:

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

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 2 - 25 127 14 [ 1 - 409639] <Unknown ID>

2: 03 25 127 15 - 1023 254 63 [ 409640 - 255104784] XENIX /usr

*3: 03 1023 254 63 - 1023 254 63 [ 255514424 - 1269536] XENIX /usr

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

Adams-MacBook-Pro:~ Adam$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 130.6 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 70.0 GB disk0s4

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

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

gpt show: /dev/disk0: Suspicious MBR 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 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

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

409640 255104784 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

255514424 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

256783960 96733608

353517568 136716288 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

490233856 863

490234719 32 Sec GPT table

490234751 1 Sec GPT header

Adams-MacBook-Pro:~ Adam$

Output of the command suggested:

Adams-MacBook-Pro:~ Adam$ sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

*

00000200

Thanks in advance.