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tgarons
Posts: 3
Member Since: ‎02-28-2013
Message 1 of 6 (708 Views)

Windows 7 dv6 goes into startup repair loop after RAM upgrade

Pavillion dv6-3216us

Windows 7 Home Premium 64bit

 

After replacing two X 2GB DDR3 SODIMMS with two X 4GB SODIMMS the system comes up with a Windows  Error  Recovery screen with two options:

1. Launch Startup Repair (reccommened)

Selcting this gives a "loading files..." screen followed by the HP logo and then back to the  Windows Error Recovery screen.

 

2. Start Windows Normally

Starting Windows screen comes up followed by HP logo and the Windows Error Recovery screen.

 

The 8GB RAM is visible in BIOS.

Booting diags and running the memory diagnostic succeeeds.

 

Everything works normally after putting the 2X2GB SODIMMs back.

Identical behavior with two different laptops and two differnt sets of SODIMMs.

 

Upgrading BIOS did not change results.

 

Any ideas?

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Paul_Tikkanen
Posts: 43,946
Member Since: ‎07-13-2010
Message 2 of 6 (704 Views)

Re: Windows 7 dv6 goes into startup repair loop after RAM upgrade

Hi:

 

What are the specs on the DDR3 chips?

 

If you installed 1333 MHz chips they need to be PC3-10600 not 10660 or 10666.

 

Honor Student
tgarons
Posts: 3
Member Since: ‎02-28-2013
Message 3 of 6 (696 Views)

Re: Windows 7 dv6 goes into startup repair loop after RAM upgrade

PCR-10600.
The Crucial part number is CT3321850.
There's a Crucial material number too:
CT2KIT51264BF1339J.000
Crucial tech support told me that the J at the end means the SODIMMs are using high density chips and that there's a small chance that replacing them with SODIMMs built with less dense chips make a difference.

I'm skeptical since the RAM is recognized by BIOS and passes a memory test.

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Paul_Tikkanen
Posts: 43,946
Member Since: ‎07-13-2010
Message 4 of 6 (693 Views)

Re: Windows 7 dv6 goes into startup repair loop after RAM upgrade

[ Edited ]

Sounds like you got the right ones.

 

Density does make a difference.  The lower the better but if Crucial gave you those part numbers based on you running their memory scan tool, then crucial guarantees comptibility.

 

If you went generic Crucial, then this is the chip you should have gotten.

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148492

 

Or the 8 GB kit:

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148493

 

Methinks you bought the wrong chips.

Honor Student
tgarons
Posts: 3
Member Since: ‎02-28-2013
Message 5 of 6 (685 Views)

Re: Windows 7 dv6 goes into startup repair loop after RAM upgrade

The part numbers of what you gave and what I have are the same except for the J.  Can you explain why the chip density on the SODIMM makes a difference?  Isn't the pin out and timing of the 204 pin SODIMM identical? 

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Paul_Tikkanen
Posts: 43,946
Member Since: ‎07-13-2010
Message 6 of 6 (676 Views)

Re: Windows 7 dv6 goes into startup repair loop after RAM upgrade

Hi:

 

I am not a PC hardware engineer. 

 

Please google High Density vs Low Density Memory, and you will find a wealth of info.

 

Here is one of many hits.

 

http://www.overclock.net/t/113885/info-what-is-the-difference-between-low-density-and-high-density-r...

 

All I can tell you is every HP desktop and notebook I know of uses low density memory modules.

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