Having a problem making changes to my RAM timings in BIOS.  The PC keeps freezing.  Is anyone else experiencing this?  This has happened before with other BIOS revisions.
GA-990FXA-UD7 with FX-8150, 2x8 GB GSkill Ripjaws 14900CL9, XFX HD6950, BIOS rev 10b.
Thanks in advance,
WW