Applying XMP profile makes my boots unstable

[Rahmat Baghdadi]

Hi there,

As the title suggests, applying XMP profile makes my boots unstable, meaning sometimes it boots, sometimes it doesn't (I don't hear a successful hardware check single beep and system just hangs).

Here is my setup:

Phantom Build:
CPU:	Intel Core i7 7700K 4200Mhz boosted to 4500Mhz
Cooler:	Cooler Master Hyper 212 LED
GPU:	MSI Geforce GTX 1080 Armor OC 8GB GDDR5
RAM:	1x Corsair Vengeance LPX DDR4 3200MHz 16GB 
M.B:	Asus ROG Strix z270e Gaming
PSU:	Green GP 750 BOC EVO
Storage:2x Seagate Baracuda 1TB SATA3 HDD (RAID 0) + 1x Western Digital Green 120GB M.2 SSD

But if I hold reset button for 5 sec, everything restarts normally.

Should I be worried?

What causes this? My guess is PSU, hence the topic placement.

[Blai5e]

@Rahmat Baghdadi - make sure the RAM voltage is set to 1.35V after you enable XMP 

[Rahmat Baghdadi]

In BIOS under Ai Tweaker, I can see it is set to 1.3530 and have a value of 1.344.

Which I guess is normal, right?

[Rahmat Baghdadi]

It still keeps happening. Could it be that PSU can't provide enough juice?