it just happens randomly that sometimes the system freezes up completely and the only out is to shut down from the power button i am not overclocked or anything and i cannot replicate the event i have ran memtest for 12 hours and it gave me 148 errors also i ran prime , linx and occt sometimes the errors happen and sometimes it doesn't
Anyone who tells you these things is borderline retarded, or a con-artist.
If MemTest86+ says the RAM subsystem is faulty, then the RAM subsystem is faulty.
Your memory controller, etc. are part of your RAM subsystem but since you are running ALL DEFAULTS (right?) then it must be the RAM itself.
Hmm...25 Memtest Passes??...4 full Passes is enough.
I assume the RAM is properly seated in the White (or Blue) DIMM slots. Also, AMD doesn't recognize 'XMP-1600' and instead only picks up on 'SPD; JEDEC encoded Frequency/CAS/Voltage. There are several Corsair Vengeance kits so I'll assume (DDR3-1600 9-9-9-24-2N @ 1.50v); you didn't list your model.
Press F7 ; Load Optimized Settings
Set Memory Clock -> 8 ; 8 * 200MHz (DDR3-1600)
DRAM Configuration / Enter
1T/2T Command Timing -> 2T ; (2T=2N=2)
CAS# latency -> 9 ; (set in accordance with your Corsair kit)
RAS to CAS R/W Delay -> 9 ; (set in accordance with your Corsair kit)
Row Precharge Time -> 9 ; (set in accordance with your Corsair kit)
Minimum RAS Active Time -> 24 ; (set in accordance with your Corsair kit)
DRAM Voltage control -> 1.55v or +0.05v ; (set in accordance with your Corsair kit)
Press F10 ; Save & Exit = 'Yes'
Rerun Memtest and if you get more than 1 error stop the test and post (here) what happens.