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Windows 7: Windows7 Freezes at Start up with too much RAM

07 Mar 2010   #1
crumblydonut

windows 7
 
 
Windows7 Freezes at Start up with too much RAM

Two days ago, I upgraded my winxp to win7. All the hardware stayed the same and everything works now, except I can only use a maximum of 6g RAM.
With 2 sets of two different brands of 2 gigs RAM, all of the RAM installed (correctly?), the start up freezes...even the start up fix freezes. When I take out just one RAM bar, the system works fine.
It doesn't matter which RAM I take out or which slot is empty, so it's not a faulty RAM or bad slot.
System works with 2gRAM, 4gRAM and 6gRAM....just not 8.

In xp, I had all the RAM installed. Even though the OS wasn't accessing it, the machine started up and worked fine.

Any ideas?


My System SpecsSystem Spec
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07 Mar 2010   #2
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit
 
 

Quote   Quote: Originally Posted by crumblydonut View Post
Two days ago, I upgraded my winxp to win7. All the hardware stayed the same and everything works now, except I can only use a maximum of 6g RAM.
With 2 sets of two different brands of 2 gigs RAM, all of the RAM installed (correctly?), the start up freezes...even the start up fix freezes. When I take out just one RAM bar, the system works fine.
It doesn't matter which RAM I take out or which slot is empty, so it's not a faulty RAM or bad slot.
System works with 2gRAM, 4gRAM and 6gRAM....just not 8.

In xp, I had all the RAM installed. Even though the OS wasn't accessing it, the machine started up and worked fine.

Any ideas?
Hello Welcome to SF,

Maybe the Mobo doesn't support upto 8GB of RAM that might be the problem. Check with Mobo Manual and make sure it support upto 8 GB

Hope this helps,
Captain
My System SpecsSystem Spec
07 Mar 2010   #3
ickymay

win7 ultimate / virtual box
 
 

Quote   Quote: Originally Posted by crumblydonut View Post
With 2 sets of two different brands of 2 gigs RAM
that sounds like a recipe for problems
My System SpecsSystem Spec
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07 Mar 2010   #4
crumblydonut

windows 7
 
 

[QUOTE=that sounds like a recipe for problems [/QUOTE]

2 strips from 1 company = fine
1 strip from 1 company, 1 from the other = don't know
2 strips from 1 company, 1 strip from the another = fine
2 strips from both = not fine

I think Jack Sparrow is probably right...I'll check on it and report back.

Cheers
My System SpecsSystem Spec
07 Mar 2010   #5
DocBrown

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

32bit or 64 bit win7 ?

Have you rum memtest86 on the various combos of memory ?

Memtest86+ - Advanced Memory Diagnostic Tool
My System SpecsSystem Spec
07 Mar 2010   #6
crumblydonut

windows 7
 
 

Windows7 64bit
Mobo= Asus P5N-E SLI, which supports upto 8gb RAM...
Memtest seems kinda drastic and time consuming. But then again, its my machine.
Perhaps I do need to keep the same brand of RAM for the full 8gb, even though it works fine to mix for 6gb.

Further thoughts?
My System SpecsSystem Spec
07 Mar 2010   #7
DocBrown

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

Have you used CPU-Z program to check speeds & timings of the different brands of memory ?
My System SpecsSystem Spec
07 Mar 2010   #8
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

crumblydonut,
Are the chips on the list of chips approved by ASUS?

Personally, I never, never mix memory chips. All the same manufacturer, all the same speed, etc.
My System SpecsSystem Spec
08 Mar 2010   #9
crumblydonut

windows 7
 
 

These are both well known manufacturers.
And...oh...geez...: 2 of the sticks are actually 1gb. Ach. PNY is the manufacturer.
The other 2 are:
OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory

The OCZ's are both inside, the PNY has only 1.

So perhaps the different manufacturers AND the different sizes might lock me up if I use them all?
[even though 1 stick works fine]

Thanks for the responses.
My System SpecsSystem Spec
08 Mar 2010   #10
Phone Man

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
 
 

I have read once on ASUS forum about problems using all the memory slots and it was stated that the memory voltage would drop just a little and cause problems. I would first try the Memory86 test and if it shows problems try increasing the memory voltage just a little. Also try the CPU_Z program as DocBrown mentioned to look at all the settings. If you can't get it to work, I would just run with the 4GB OCZ which should be ample. I have 4GB in my system and have never seen it use more than 2GB.

Jim
My System SpecsSystem Spec
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 Windows7 Freezes at Start up with too much RAM




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