Performance degrades in Probook 4540s after memory upgrade

[shak3800]

Has this been fixed ? I m wondering of buying 16 gb as well but not sure it will work since i do have a discrete graphics card.

Has anyone tried disabling the pagefile and see if it is fixed??

[mspm · Accepted solution]

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).

[Flenger]

It's works!!!! Finally solution is find!!! Thanx a lot

[tc71]

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!  🙂

[gallarr]

Really glad to know that someone found a solution. Thanks a lot for sharing.

[shak3800]

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 

[gallarr]

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.

[shak3800]

Are you sure this doesn't happen with 12gb ? I've seen posts reporting that same thing happens with 12gb as with 16gb

[Flenger]

I had a problem ether with 16 gb and 12gb

[gallarr]

It did not happen to me with 12GB, I guess it depends on the specific model.