Thanks, Jeremy. I did as you suggested. First I ran the Apple Hardware Test CD with the OWC module in the upper slot, and the test reported the upper slot as being empty. Then I swapped out the RAM modules, putting the known-good Apple RAM in the upper slot, and the OWC module in the lower slot. The machine booted fine, but when I checked it was still recognizing only 256 megs. This time the hardware test didn't recognize the Apple RAM in the upper slot, again seeing it as empty. I know I've inserted it correctly, as I double-checked it with an Apple QuickTime movie on memory installation and the card fits precisely as it should in the upper slot.
So, I've determined that it isn't the OWC module that's defective, it's either 1) the installer, me! or 2) a problem with the upper slot. Is it possible for there to be a logic board problem that would cause this? I've only had this TiBook since January, so it's still under warranty. Thanks, Nancy At 5:05 PM -0400 5/30/02, G-Books wrote: >From: Jeremy Derr <[EMAIL PROTECTED]> >In-Reply-To: <[EMAIL PROTECTED]> >Message-Id: <[EMAIL PROTECTED]> > >On Thursday, May 30, 2002, at 02:14 PM, Nancy Butts wrote: > > > I just received my second 256 MB RAM module in a week from OWC, and > > my TiBook 550 hasn't recognized either one of them. It appears to > > meet Apple specs: PC 133 low-profile SDRAM (that's what it says on > > the module itself. OWC lists it on the invoice as SO-DIMM, and I > > honestly don't know the difference). I followed the installation > > instructions in the manual-it couldn't have been easier. I reseated > > it several times, and zapped the PRAM just for good measure, but to > > no avail. Is there something I'm missing? I just don't think it's > > very likely that I would get two defective RAM modules in a row. > >Getting two bad modules in a row is more common than you'd think.... > >The first thing I would try would be to see if your original RAM works in >both slots. If it does, then mostly likely it's the new chips that are >goofed. Also, install the new RAM and run the Apple Hardware Test CD that >came with your computer. -- G-Books is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-Books list info: <http://lowendmac.com/lists/g-books.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-books%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
