Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a laptop, HP EliteBook 8540p having originally 4GB RAM and I've recently bought Corsair Value Select SO-DIMM 16 Go (2x 8 Go) DDR3 1333 MHz.

It fits the required RAM specifications perfectly, and once I've inserted them, the BIOS recognizes the memory correctly, but my linux Gentoo running on kernel 3.1.6 SMP x86_64 crashes immediately when I'm running an app which consumes a lot of memory. The laptop crashes as if there's no more battery left, when the memory reaches at least 6000MB ram.

Windows 7 doesn't want to run anymore, it shows a blue screen with the IRQ LESS OR EQUAL error if I set 8GB, and it doesn't boot at all if I set 16GB.

Is there something I could do to fix this please ?


EDIT: I've ran the latest version of memtest, it freezes within 3 seconds showing weird colors on the screen with a single 8gb ram and both ram plugged. Of course it works perfectly with the original memory devices I had.

Are these memory devices corrupted ?

share|improve this question
    
Post the specifications of the laptop for us. It sounds like you have at least one bad modual. I also suspect your motherboard does not support more then 8Gb of memory or at the very least at the current speed. –  Ramhound Mar 20 '12 at 11:24
    
I've just done a dmidecode and it says Maximum Capacity: 8 GB That's really weird, the bios tells me there's currently 16GB installed. Well, if I put only 8GB (with one RAM device), linux crashes too when it reaches 6GB ram. My full dmidecode : pastebin.com/RxKmUBjf –  Axel Isouard Mar 20 '12 at 11:29
add comment

1 Answer

up vote 3 down vote accepted

It seems the HP EliteBook 8540p can only support a maximum 8GB of RAM (4GB per slot). This would explain why you're getting the "Maximum Capacity: 8 GB" in your dmidecode.

IRQ LESS OR EQUAL usually suggests a problem with memory also.

http://www.helpgurus.com/default/content.php?contentFolder=hp&contentSubFolder=elitebook-8540p&contentid=memory-upgrades

Hope that helps!

share|improve this answer
    
I've ran the latest version of memtest, it freezes within 3 seconds showing weird colors on the screen with a single 8gb ram and both ram plugged. Of course it works perfectly with the original memory devices I had. EDIT: Oh, it's 4GB per slot, so it will deny 8GB in a slot then ? –  Axel Isouard Mar 20 '12 at 12:32
    
Four is usually more than eight.. so yes. –  ekaj Mar 20 '12 at 12:38
    
My advice would be to see if you can get your memory kit refunded/store credit and purchase a 2x4GB kit. –  sleepyscene Mar 20 '12 at 12:45
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.