System restarting after installing new RAM

I have an Intel DH55TC motherboard, had a 2GB DDR3 RAM installed on it and have been using it for about 3 to 4 years. Recently i thought of upgrading the RAM to 8 GB and bought two 4GB DDR3 Kingston HyperX RAM sticks(4GB x 2). To install the new RAM sticks i removed the old RAM stick, inserted the new ones and tried starting the system. I checked the BIOS menu and it was recognizing both of my RAM sticks.

But once the OS(Windows 7 64bit) boot is about to start, system is getting into rebooting loop.

I removed both the new RAM sticks and tried starting the system again with a single 4GB RAM stick but still the system enters into the loop. Once i put the old RAM in Windows is booting properly.

Specs:
Motherboard : Intel DH55TC (Core i3)
OS : Windows 7 64bit
Old RAM : 2GB DDR3 1333MHz
New RAM : 4GB DDR3 1066MHz

Note : Motherboard supports both 1333 and 1066MHz and upto 16GB RAMs

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