PC won't boot with 7700K and more than 1 RAM stick installed

Hi everyone,

I have a rather strange problem and I am out of options.

Here is the system:
G4400 or 7700K
GA-Z270P-D3
Corsair Vengeance LPX 2x8GB
Zotac 1070 TI AMP Extreme
Corsair RM850x
Sandisk SSD Plus

Switched to intel from ryzen because I needed higher clock speeds... Regrets in my case...
So, I have a 7700K in hand, a litlle abused. Delided but heat sink was off when I got it.

GA-Z270P-D3: 1 pin broken, 1 seriously lost elasticity. G4400 working just fine. However when I put the 7700K in, nothing. Infinite loop with instantenous power loss and back on every 3 seconds.

I managed to boot only once with single RAM in 2nd slot, BOSD after desktop showed up.

I put the 7700K on a friend's MSI Z270-A Pro and only boots with RAM in 1 & 2 slots. (DIMM A not working). It runs p95 fine.

So obviously the 7700K is working but how? Haven't tried another 7700K yet on GA-Z270P-D3. I suspect those pins are for RAM channels?

The G4400 runs RAMs in any slot on GA-Z270P-D3.

Could it be the 7700K contacts are just dirty or doesn't sit well?

Many thanks.
2 answers Last reply
More about boot 7700k ram stick installed
  1. It could be that the G4400 uses different pins for the RAM than the 7700K. Try the 7700K, the RAM, and the G3300 in a known fully functional board. Keep all of the other hardware the same.
  2. CompGee said:
    It could be that the G4400 uses different pins for the RAM than the 7700K. Try the 7700K, the RAM, and the G3300 in a known fully functional board. Keep all of the other hardware the same.


    I dug into this and found out that one of the pins is for DVI output and the other is VCC (of the 128 others). So, I would assume not related.

    When I looked in better light, I recognized some residue on CPU contacts though. Ordered IPA and will clean those off tonight. Will post results.

    I am totally content to be obliged to buy a new mobo but I hope it's not the CPU. I will also put in a friend's 7700K next week if cleaning doesn't work.
Ask a new question

Read More

Constant Reboot RAM