Bootcamp Partition has Disappeared, need help.

Alright, I'm out of my league here and I need some help. I've been using bootcamp for quite some time now, and I wanted to increase the partition size (**** steam sales).
I don't remember the exact steps I took, but I'll try my best. I decreased the Mac partition in disk utility. While I was doing this, I noticed that there was no "BOOTAMP" partition on the left side, instead there was a "disk0s4". I then rebooted into windows (refit) to find a black screen that gave me an error, saying Missing bootable device, press any key to continue. I restarted, and did the refit table sync thing. It synced the tables, so I rebooted again into windows. I now get a Missing Operating Systems error. I restarted again and went into disk utility, and tried to verify and repair disk0s4, but I got an error for both saying "Invalid BS_jmpBoot in boot block: f682fc". When I went into Startup disk, the bootcap partition doesn't show up. When I restart and hold the option key, the Windows partition shows up but doesn't load into. I backed up the mac partition with Time Machine, but is there anyway I can back up my now non-existent bootcamp partition? Or is it just long gone? Any help would be greatly appreciated.
If you need more information or pictures just tell me and I will try my best.
Also, the disk0s4 partition is smaller than what it used to be. It may be what I originally had it as before I enlarged the partition.

As you have found out (the hard way) you can't resize a Boot Camp partition safely (one exception, CampTune can)
Backing up your Windows installation may be possible using WinClone, or you could try to image the entire drive using Disk Utility.
You are likely to have to erase the entire drive and reinstall though.
There is a very knowledgable poster on this site, Christopher Murphy. Look for one of his threads and post a request in it for his help, you may be able to get out of this without reinstalling anything with his help.

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