vtech1

Got this machine with 2*512's. Upgraded to 2*1G - all ok. Just tried to upgrade to 2*2G and it bluescreens.
If I pull one module out, all is fine. If I replace that module with the one I took out, all is fine, too. If I leave the 2G in the lower slot and put one of the 1GB in the upper slot - bluescreen.
I am running Windows xp x86

i copied and pasted most of it because those are the exact problems i got

anyone know how to fix it?


EDIT: when i boot the system it reads all 4gb so i dont know

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ComGuards

The Kingston and Crucial sites both say that the maximum amount of RAM supported in that system is only 2GB... kind of weird considering it's DDR2-RAM.

Anyway, best answer, your RAM sticks are probably incompatible with the motherboard when running in pairs. Timings are off, speeds are off, etc etc. Something along those lines. Probably best to call Acer and see if they have an approved list of RAM upgrades.

vtech1

um i dont know if u saw buy the memory is being read and all but as soon as windows loads to desktop it freezes with lots of squiggly lines and such

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jtypin

I think your RAMS vtech is kicking in yo.

Try underclocking or overclocking the RAM and see if it still BSODs?

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ComGuards

I saw that part - I was simply making a comment that the major RAM manufacturers say that the system only takes 2GB, which would be surprising.

The second paragraph was in response to the fact that you said the BIOS sees 4GB. I'm saying that the particular RAM chips you have might still be incompatible due to memory timings or speeds. Just because the BIOS sees the RAM doesn't mean the RAM is fully compatible with the system.

You can also see if you get a BSoD if you boot into Windows Safe Mode. It could be the graphics driver that's having a fit about the RAM since the system uses Intel GMA graphics.

rpgman1

My Compaq Presario has the limit of 2GB RAM as well, but Windows 7 was able to read more than 2GB due to a BIOS upgrade. It could be the mobo chipset, which limits the amount of RAM used on the laptop.

UndertheGun

It supports 4GB's. BIOS shows 4GB, link to manual page 19 bottom.

vtech1

yup, and i did a google search and found a bios update but it didnt help..
i mean it accepted the new cpu (C2D T6400) i got for it so why not the new ram? witch by the way is 2x hynix 2GB 2Rx8 PC2-6400s-666-12

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ComGuards

If the system isn't taking the new RAM, AND you've flashed the BIOS already, I don't think there's anything you can do to *force* the system to accept the RAM.

At this point, if it were me (and I hadn't thrown the system out the window yet), I'd probably return the RAM and get chips that are 7-7-7-20 timings.

What's the speed / timings on the 512MB and 1GB DIMMs btw?