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05-17-2014 08:08 AM - edited 05-19-2014 11:06 AM
In case anyone is still interested in this topic:
This is a workaround that worked for me.
It is not an official or supported solution.
I have used the laptop extensively in described configuration and did not have issues that i can relate to memory configuration.
Deducing 256 MB RAM from memory available to OS might eliminate the problem for some CPUs.
The solution works on:
- HP 4540s
- i5-2450M
- AMD/Intel switchable graphics
- 16 GB RAM
- Bios F.42
It might work for other CPUs.
Under Windows you should deduce 256 MB RAM, by using EasyBCD or similar tool.
Instructions for EasyBCD:
Under Advanced Settings/Developer set 256 under "MiB deducted from physical memory", save settings and restart.
Under Linux, set "mem=17G" in kernel boot parameters (effectively deduces 256 MB).
Edit:
Under Windows 7 and later, you may also use the following instead of EasyBCD:
bcdedit /set {current} removememory 256
(Execute the command in command prompt with administrative privileges and reboot).
05-17-2014 01:04 PM
ProBook 4540s with i5 and Windows 7 Pro, now (finally!) working with 2x8G 1600M DDR3 sticks using your suggested fix with EasyBCD. No more eternity to boot or slowing to a crawl in operation. Thank you so much! That 2nd 8G stick has been sitting in a box for a long time awaiting a resolution to this problem! 🙂
05-19-2014 07:39 AM - edited 05-19-2014 07:40 AM
What does it cost to deduce 256mb ? I mean what is the effect of this ? What exactly mean to deduce 256mb ?
Can this be used with 12gb as well ?
Also is there another way to do it ? I don't want to use easybcd bootmanager. I want to be able to boot right away to windows without that
05-19-2014 08:09 AM
The problem does not happen with 12 GB, only with 16.
The only cost of doing this is that you have 256 MB less of RAM (15,75GB instead of 16GB) . That's just 1.5% of capacity you waste. I think it's affordable considering no one could find a proper solution so far. And if after a year and a half nothing could be found, it's either using that boot loader or use only 12 GB. Choice is yours.