First you need to check your manual or with Packard Bell and find out what size memory can be added and in what banks. Generally most motherboards have particular ram configurations that you must adhere too when adding additional ram. Packard Bell is very proprietary and as such may require special memory upgrades as well. If you are getting past the post memory check without a error and your problem only surfaces when your in windows then maybe one of your ram chips are bad. Do you have any problems in DOS...like say after you boot from a floppy ? Can you swap out the memory long enough to see if the problem is with these particular ram simms....I assume we are talking about EDO. m I have a >packard bell 120 mhz. I can't put any ram in the last 2 banks what do you >suggest? If I happen to put memory there, windows gets corrupted and I have to >reinstall it.. other than that if I just run 2 banks of memory I'm ok... >Denise Matarangolo ----- PCBUILD mailing list - http://nospin.com Bob Wright:[log in to unmask] - Drew Dunn:[log in to unmask]