Hi. I just bought a 1 GB RAM stick from Crucial. I used their memory finder to make sure I got the right kind for my laptop (Toshiba A135-S2276). It came w/512 and I added the 1GB, but not all of it shows up. I emailed Crucial (they mention this problem in the info booklet that comes w/ the memory) and got no response. I also say on hold for 1/2 hour before giving up. The laptop is running Vista Basic. Any suggestions?