Windows 7 load from GRUB 2.02 beta, Fatal System Error

So, I have a dual boot pc, with Ubuntu on one disk, and Windows 7 on another, in a separate partition. A couple of days ago, I tried to log in to Windows, and have been getting this message ever since:

STOP: c000021a {Fatal System Error} The initial session process or system process terminated unexpectedly with a status of 0x00000000 (0xc0000428 0x00010488) The system has been shut down.

I tried the repair procedures suggested on various sites, using a Windows installation cd, but nothing seems to work. The only things that have changed lately are that I've reconnected my dvd player, but that was a few days back, and Windows started up just fine after, and downloaded and installed updates for Ubuntu. I changed nothing under Windows.

I'm no computer wiz, and really don't know what I should do. Any help would be great. Thanks

are you getting to windows i mean can you access windows now? if yes then install EasyBCD 2.2.0.182 dual boot Windows 7/8 download it from any torrent website and make dual boot your system. i think your bootmgr is not working correctly