Make the following changes to your bios:
Many EP45 DDR3 systems have trouble with rated memory speeds when overclocking. The 2.40B memory multiplier will temporarily lower your memory speeds to 912MHz and this should help eliminate memory as the problem.
System Memory Multiplier -------- : [2.40B]
Static tRead Value -------------- :  <== for memory channels A and B
Standard Timing Control
CAS Latency Time ------ 9 ------- : 
tRCD ------------------ 9 ------- : 
tRP ------------------- 9 ------- : 
tRAS ----------------- 24 ----- : 
CPU Vcore ------------- 1.225 <-- Is this set to AUTO? 1.225? Something else?
Posting that you got a BSOD at a specific setting is next to useless; we need details!!!
What programs were you running?
How long did the program run before failing?
What was the BSOD error code? 0x124? some other code?
You need to prevent windows from automatically booting after a BSOD.
Running the windows Event Viewer will let you find the most recent BSOD general information.
MCH Core that is too high or too low can cause boot loops or system crashes.
Have you raised CPU Vcore above the original value that AUTO set?
IBT or LinX are next to useless when doing stress tests.
I run these programs as a preliminary stress test for 5 loops using all available memory.
I cringe when I see others who swear that 20 - 50 loops (or more) is a thorough stability test.
Do you have your boot drive imaged in case a BSOD or freeze corrupts your boot partition?
Many times IBT or LinX will run successfully for XX loops, only to have Prime95 or similar programs fail, sometimes within several minutes and sometimes after several hours. I suggest running separate Prime95 tests for at least 4 - 6 hours every time you make overclocking changes. A system that is minimally stable will often fail within one hour, and sometimes within minutes. It's not really practical to run two 8 - 12 hour tests to ensure that your system is reasonably stable every time you make bios changes..
Details are important!!!
What would your doctor do if you called the office and said "Hey doc, I've got a headache, what's wrong?"