Windows 7 only allowing 1 stick of RAM

I was having problems installing Windows 7 64-bit for a couple days. It was crashing and taking ridiculously long. After some research I removed all but 1 stick of RAM and everything went fine. After getting 7 installed I tried putting my remaining RAM in and the system freezes at the starting windows screen. It starts up and runs fine when I have 1 stick of RAM in. I have tested the RAM and it is all in good condition. I was running XP pro earlier this week on the exact same hardware with no issues.

I also tried manually setting my RAM in BIOS to:

Voltage: 1.90v and 1.8v
CL:4
tRCD:4
tRP:4
tRAS:12

Anyone have any ideas?

mweb22 said:

I was having problems installing Windows 7 64-bit for a couple days. It was crashing and taking ridiculously long. After some research I removed all but 1 stick of RAM and everything went fine. After getting 7 installed I tried putting my remaining RAM in and the system freezes at the starting windows screen. It starts up and runs fine when I have 1 stick of RAM in. I have tested the RAM and it is all in good condition. I was running XP pro earlier this week on the exact same hardware with no issues. Anyone have any ideas?

You might want to check for a mam memory setting in bios

bad ram? How many slots are available? Are the sticks of ram all the same?

brady said:

bad ram? How many slots are available? Are the sticks of ram all the same?

ran memtest86+ both sticks of RAM didn't find any errors.

yes the RAM are both identical sticks of RAM, the specs are in my profile.

I have 4 slots available and have them in the correct matching DIMM slots. I have tried them in the other set of DIMM slots too with the same result.

check your motherboard. Some motherboards require a certain setup of the ram. 1 & 3 slot, 2 & 4, 1 & 2 or 3 & 4... if you see where i'm going with this. Memtest won't always find a leak... I would suggest test each stick in a "working" slot. If they both work fine "separately", odds are it's a slot match up issue. Asus is notorious for this

DocBrown said:

Are both sticks the same Brand & Speed ? Any overclocking of CPU or Ram ?

RAM specs are in my profile and yes it is a kit where both sticks are the exact same.

No I am not doing any overclocking.