Computer won't boot OS with new RAM

[Alathas]

I have tried to replace my old 4x1GB memory sticks with 2x4GB memory sticks (that is, removing all 4 old ones and putting in the 2 new ones without mixing). These new ones are the

 

XMS3 — 8GB Dual Channel DDR3 Memory Kit (CMX8GX3M2A1333C9), 1333MHz, 9-9-9-24 1.50V ver7.21

 

Upon trying to start up my computer, it's working fine for the first few seconds, but the moment where it should come up with the windows logo, it immediately turns off. The sticks are inserted correctly - pushed down until both sides click -it happens no matter what position I put the two sticks, and my PC starts up fine with just two of my old memory sticks. My old ones are also 1.5V, but have a frequency of 666MHz, but nothing online seems to indicate this is an issue - Crucial.com also recommends 1333MHz sticks. My Operating system is Windows 7, 64 bit, and can support up to 16GB. The only difference I can see is that my old sticks are 9-9-9-24-2T while my new ones seem to be 9-9-9-24. Is there something I can do on my end, or is my motherboard and RAM just not compatible?

 

I'm not sure if I put in my system specs correctly, but it's a Dell Studio XPS 8100: : http://www.crucial.com/systemscanner/viewscanbyid.aspx?id=17CFC79231D926C3

[Synthohol]

it seems Corsair does not yet make any 8 gig ram set that is certified compatible for the Dell 8100.

http://www2.corsair.com/configurator/system_results.aspx?sc=&id=971279

only 4 gig.

sorry to bring bad news.

[Alathas]

It's a definite resolution to the problem, I'll gladly take that, thank you very much =)

[peanutz94]

Yup, you would need to have a 4x4 gig kit for that machine to make up your 16gigs. Then you should be golden.

[Synthohol]

huh? where did you see 16Gigs? he was trying just an 8 gig kit :)

[peanutz94]

My fault Synthohol. i looked at the link he provided and total system memory was 16 gig's. I mis read that.

 

However if you look at DELL's site on system specs it uses either an I5 or I7 and he SHOULD be able to use those modules even though they are not listed in the memory finder. It may just be another case of a fineky DELL with aftermarket memory. :)

 

He states a frequency of 666mhz which doesn't jive with the system info , unless it should be 666x2 (DDR)

for 1333mhz.

 

I'm wondering if there is a BIOS update or if he cleared CMOS before inserting the new memory.

[Alathas]

I got that from a program called CPU-Z, here:

http://imageshack.us/a/img266/3395/memoryfrequency.png

So 666Mhz for each of the four 1GB sticks and 1333MHz for both of the 4GB sticks.

 

Dell's website says that my BIOS is up to date, I've not heard of CMOS before but now I've searched for it directly that might fix the problem, I'll try it out tomorrow, thanks =)

[peanutz94]

I got that from a program called CPU-Z, here:

http://imageshack.us/a/img266/3395/memoryfrequency.png

So 666Mhz for each of the four 1GB sticks and 1333MHz for both of the 4GB sticks.

They are all 1333mhz memory then . Even when you would insert the 4gb sticks they would read 666mhz in CPUz as well. The system specs on dellls site also show 1333mhz memory as the stock memmory speed.

 

REAL 666mhz memory hasn't been used in anything in a very long time. The older Pentium based and AMD systems used to use that but it's not made anymore and hasn't been for many years..

 

DDR stands for "double data rate" So you would take CPUz reading and double it. 666mhz x 2 =1333mhz

 

I've not heard of CMOS before but now I've searched for it directly that might fix the problem, I'll try it out tomorrow, thanks =)

Basically CMOS is a round about way to refer to a semi conductor that is connected to your BIOS. It's way more complicated than that , but a reset of your BIOS will often flush out settings from the previous memory and could potentially fix your issue allowing your BIOS to detect the new memory correctly.

 

Let us know how you make out.