Bootcamp partition will not boot

hi there,

I am having an issue with my bootcamp partition on my MacBook.

The windows partition is showing up when I hold down the Option key on startup but it just brings a cursor saying:

A disk Read error occurred.

Press Ctrl+Alt+Del

When I boot into Mac OS X the partition and check Disk Utility the windows partition is greyed out and showing up as disk0s4

From reading other solutions on this site I thought it may be the GPT and the MBr but I am unsure how to fix it.

The results of my fdisk and gpt checks are:

sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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: AF 25 127 15 - 1023 254 63 [ 409640 - 388671872] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 389081512 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 390352896 - 586420224] HPFS/QNX/AUX

sudo gpt -r -vv show disk0

Password:

gpt show: disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

gpt show: disk0: Suspicious MBR at sector 0

gpt show: disk0: Pri GPT at sector 1

gpt show: disk0: Sec GPT at sector 976773167

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 388671872 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

389081512 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

390351048 1848

390352896 586420224 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

Any help would be appreciated.