Garry T. Williams: >> yum install memtest86+ PerAntonRønning: > Done, it went smootly. Am I now supposed to burn a DVD for this program, > and boot from that DVD? If it hasn't already installed an entry in the boot menu, then as root, type in memtest86 (hit tab to complete, in case there's a + on the end), and hit enter. Then reboot, and pick it from the boot menu. You can check what's in the boot menu, without having to reboot, by reading the /etc/grub.conf file while you're the root user. -- [tim@bigblack ~]$ uname -ipr 2.6.22.1-41.fc7 i686 i386 Using FC 4, 5, 6 & 7, plus CentOS 5. Today, it's FC7. Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.