Weird RAM behaviour in Toshiba Satellite l100 Pro

August 10, 2012 at 16:41:04
Specs: Windows XP, Celeron M 380; Crucial Tech RAM
I've been trying to upgrade the RAM in my Toshiba Satellite l100 Pro laptop. I have two sticks of 1GB DDR2 PC2-5300 SODIMM memory, and when I put both of them in at once, my laptop refuses to boot up. Sometimes it powers up but does nothing; sometimes it bleeps; sometimes it even gets halfway to booting into Windows (XP) before I get a "Page Fault in NonPaged Area" BSOD.

What puzzles me is that if I boot up with just a single ram stick, it runs fine. It boots up with either stick, so it's not the ram chips themselves. It boots up regardless of what slot the chip is in, so it's not the slots. And it boots up fine if I put two 512mb chips in (512 pc-4200), so it's not some problem with using both channels at once.

So what is it? The only thing I can think of is some kind of voltage issue; maybe there's not enough power for two 1gb chips. But the BIOS won't let me change voltages (it doesn't even list them), I can't seem to see any jumpers on the motherboard (although I've not taken the laptop apart completely yet), and according to programs like HWINFO, the 1gb chip is 1.8v, just like the 512s. So I'm stumped. Any suggestions?

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August 11, 2012 at 05:13:12
Go to and use the memory scanner to ensure you have the correct memory as regards voltage/CAS/density.

L100 Toshiba have several models in that series................

ARM Devices the future. Windows have accepted the fact!

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August 11, 2012 at 06:39:31
As above scan at crucial to see if the memory is of the same type as recommended there or beyond the maximum the MB can handle.

With one of the new memory sticks at a time, run Memtest86 via a bootable CD to see if the memory is really good or not.

You have to be a little bit crazy to keep you from going insane.

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