New RAM not recognised

[Thomas_crowther]

Ok, have found something new....

[Thomas_crowther]

I have discovered something which may well be important.

The original RAM is rated at 1.35V

Both sets of the new sticks are at 1.5V

From what I have read, this usually doesn't make a difference, BUT sometimes it does.

Can anyone confirm this may be the issue?

[Thomas_crowther · Accepted solution]

Information from HP website about the 550-153na 

RAM upgrade information

Dual channel memory architecture

Two 240-pin DDR3 DIMM sockets

Supports the following:

PC3-12800 (DDR3-1600)

PC3-10600 (DDR3-1333)

But when you read the info about the motherboard itself, the Odense....

Memory upgrade information

• Dual channel memory architecture
• Two 240-pin DDR3L DIMM sockets
• Supports the following:
  • PC3L-12800 (DDR3L-1600)
  • PC3L-10600 (DDR3L-1333)
• So thanks for that HP, if I was given the correct information to begin with then I wouldn't have wasted the best part of two weeks banging my head against the wall. 

[Thomas_crowther]

Purchased some DDR3L, installed and running fine.

So, information on HP site is incorrect.

Correct specs are buried away in the Odense motherboard section.