Too much Vdroop on P67A-C45 (B3)

Hi, I have seen Vcore on another P67A-C45 B3 and it manages as my previous B2 (+0.008 on full) but mine is drooping more than 0.03v   
CPU-Z shows 1.272 on idle and 1.24 on full (Prime95, can be higher using LinX).
Otherwise, it needs a reboot to detect a Seagate 7200.11 500GB wich works perfectly in othre motherboards and I was having BSOD 124 on idle, I'm testing now last BIOS 1.I turbo ON, no crashes yet...
¿Any idea to fix the HDD detection? It look like an insurmountable compatibility problem :(
¿Can I do a RMA process to fix the Vdroop problem? I have never seen an Vdroop like this, even in most cheap motherboards.
I'm setting in manual, dynamic is too high and MSI motherboards can adjust offset as other brands 
¿How about othre P67A-C45 B3, is normal this Vcore?
Thanks guys.

Heh, I use your avatar in other forums 
Thanks for reply HU16E, I'll follow your tips.
My system:
Hyper 212+ (+2 Gentle Typhoon 1150, max. under 60º @4,4-4,7)
2x2GB Kingston Value RAM 1333 CL9 1.5v @ 1600 (1333 when testing)
7200.11 500GB 32MB (last firmware SD1A)
OCZ Z-Series 550W
i5 2500K
HD 6850
Marian Trace Alpha (sound card)
Conceptronic C54Ri (wireless controller)
I have read about similar problems with MSI motherboards, its not as simple as raise Vcore because I can pass 2h of Prime95 Custom (1792 min & max FFT, all the RAM & 1min per test. I dont know a better stability test, works better than LinX + AVX). If it can pass 2h torture test with 1.24, something is wrong crashing with 1.27 (IDLE). I have tested 1.27-1.24 for 4,2 (use to be @4,5) and a bit less Vcore for stock with older BIOS, still having problems. It looks like turbo works better, in fact I have read that here (this forum is much better than latin). I hope turbo + last BIOS will be fine 
I don't want to set APS/Intel, it manages Vcore without Vdroop but using for stock (33+T, 1 volt in manual works fine) the voltaje needed for my actual frequencies, higher with OC & without adjustment (just a poor ON/OFF LLC wich isn't working with manual Vcore) 
Thanks again, I'll pray 

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