[HELP]dual boot only goes to Windows.(Mavericks 10.9.5+Windows7)

plzhelp1990 said:

Hello I just had my second Hackintosh build,but this time I met a lot of problems.
here's my specs:

MB:Gigabyte H87M-D3H
CPU:Intel Xeon E3 1231V3
GPU:Asus GT640 2GDDR3
RAM:Kingston 8G DDR3X1
PSU:CoolerMaster GXII pro 550W
drives:1.ADATA SSD 120G (SATA0)
2.WD BLUE 640G (SATA1)

the first problem I met was the [system uptime in nanoseconds:xxxxx...],so I can't get to the installation
then I followed the thread here:http://www.tonymacx86.com/mavericks...9-system-uptime-nanoseconds-boot-error-2.html
and I use the boot flag:[ -x -v maxmem=4096 dart=0 ]
get to the installation succesfully
then I have both of my drives have 2 parititions,the SSD is for systems and the HDD for other things(all the formats and steps followed the installation guide.)
the installation goes well,I installed Mavericks on the first paritition of the SSD and after I installed Mutibeast everything works fine and the Chimera boots fine without the Unibeast USB

then I installed Windows7 on the 2nd paritition of the SSD,after installing I reboot the system then it won't get to the bootloader,it goes straight to Windows
I tried the boot0:Error method,but it still won't work
any idea what I've done wrong or anything I can do now?
and again,sorry for my English
Any comments will be much appreciated.

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