Hi I have a sony vaio laptop with vista home edition. yesterday I got a scary blue screen just before windows started.. the blue screen look like this : ImageShack® - gk2k's images I think it's a memory problem and I want to check my memory so I downloaded and created a boot cd of memtest86. I restart my laptop and boot the CD of memtest86, but it dosen't starts the check, it just open a new DOS look like this : ImageShack - Hosting :: doswinpt6.jpg does anyone has an idea what i'm doing wrong ? thanks