Hi I have built a new computer. The computer have 3 HDDs. I installed windows 8.1 pro first. Everything works fine. Then I unplugged the first HDD and installed windows 7 ultimate on anothed HDD. After the installation, I put my HDD back. From that point, my computer can read the disk where windows 8 is installed. But I cannot boot into it. It keeps on booting into windows 7. I have used the Bootrec.exe/ScanOs in repair disc cmd. The simply found nothing.
One more thing. My computer's Hardware is
Motherboard: AsRock Fatal1ty H97 Killer
CPU: Intel I5 4690
Graphic: Galaxy GTX 750 Ti
Ram: 8x2 DDR3 1600 Kingston Hyper X
I thing this is good enough for windows aero. But the aero peek, transparency is all disabled. I have choose the aero theme at personalisation and also run the system performance test. I got 7.9. I also try the troubleshoot tools of aero, nothing shows up. What can I do?
P.S. I have installed all drivers
