Old 4GB Ram never BSOD but an 8 GB stick or 2x4Gb will BSOD

[PGTippz]

do I need to change bios settings to fix my issue.

Currently I am using my fail safe 2x2GB ram

however using 1 8GB stick causes a BSOD normally irql not equal to or something

or

Using 2x4GB ram also causes BSOD

 

[animal]

it would help if we knew the full details of what motherboard and what RAM (old and new)

 

[PGTippz]

The 1 8GB stick is Zeppelin 8GB 1333 http://www.infoke.com.uy/p/555/3213/memoria-zeppelin-extra-8gb-ddr3-13335128.html

The 2x4gb is corsair vengeance lp

http://www.corsair.com/memory-by-product-family/vengeance/vengeance-low-profile-8gb-dual-channel-ddr3-memory-kit-cml8gx3m2a1600c9.html

the motherboard: ga h55m s2h

the 2x4gb ram has never bsod it is zeppelin aswell

 

[animal]

I think the 8 GB stick may be above the RAM slots ability, I believe your mobo can only handle 4 GB per slot.

According to Corsair website, your 2 x 4 Corsair sticks should be compatible. Have you tried booting with only one stick installed?