The power supply failed on my Dimension XPS T600r. I replaced it with a new one.

Several times afterwards, when I booted the system, after a few seconds on the Dell splash screen, the computer would go directly to the Setup screen on Maintenance mode. Regardless of whether I changed any values or not, when I got out of the setup I got the message "Jumper must be returned to normal position for settings to take effect. It is safe to turn the system off now".

The BIOS configuration jumper (J8A1, which I assume is the one the message is refering to) has never been touched, and is still on pins 1 and 2.

After a few of these boots, the system started hanging at the Dell splash screen. After trying to boot many - I mean many - times, it will finally boot. I will the use it for days without shutting it down, for fear of the problem. Sure enough, as soon as I reboot t back I am at the Dell splash screen.

The leds at the back are green-green-green-yellow.

I cannot run the disgnostic CD because the computer will not boot from the floppy. I upgraded from 98 (factory-installed) to XP.