Check to see that if the newly installed memory module has chips on both sides. Some systems limit the total number for "sides" that are recognized, so if you have some existing modules installed, try removing them and then boot up with only the new memory installed in bank 0 or whichever bank that memory should be filled in first. If the system recognizes the new module as the correct size then return the new double sided modules that you just got and request single-sided modules instead. This should fix your problem. Your motherboard accepts a maximum of 512 mb of memory in 8, 16, 32, 64, 128, or 256 mb modules. If you have any other problems feel free to email me back at [log in to unmask] Have a great day! _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com