Hello, i've had my P55-UD4P Gigabyte board for a couple years, it has been great. i've ran it 24/7 with my i5 750 at 4.0ghz. Except recently i tried to upgrade from 4GB to 12GB and it is just not working! i have put ALL overclocks back to factory settings to try to figure this out.
First i bought G.Skill Ripjaws X F3 8GB kit:
http://www.ncix.com/products/?sku=57...ture=G%2ESkill but even with just the new memory in, my motherboard would not post. so, i rma'd it, and ordered some Corsair Vengeance 8GB kit:
http://www.ncix.com/products/?sku=57...acture=Corsair the kit does the same thing! i'm hoping it is not the same memory underneath. even if i can't get all 12GB working, i'd be quite happy with running with 8GB.
At first i was trying with the Bios version i've had for a long time, than i updated to the latest Bios (F10), but nothing changed. if i put just 1 stick in, the system boots fine. but if i put both sticks in, it just beeps like crazy and doesn't post.
i sent in a ticket to Gigabyte about it, but they have not responded. i've tried to loosen the screws on my heatsink, a Noctua NH-U12P, but that didn't help. i've also tried different memory voltage, starting at stock, 1.5, then 1.6, then 1.7. nothing changed.
any help would be greatly appreciated!?