Computer does not boot - Memory Refresh Failure or ???

Computer does not boot (HP/Compaq D220 MT/ Windows XP – SP2)
Disconnected everything except mouse, keyboard, and monitor
Computer cycles: HP logo, Windows XP logo, shuts down, HP logo, etc.
AMIBIOS v.1.09, released 11/14/2003
One beep: AMIBIOS says it is a Memory Refresh Failure
Motherboard: 335186-001
- Purchased a new RAM module from Crucial
Original was 256 MB, new is 512 MB, BIOS recognizes either and
both
- Cannot boot from diskette
- Tested with two different sets of keyboard/mouse/monitor
- I have reset the BIOS
- RTC is OK
- BIOS Utility does not offer any diagnostic
- I have cleaned up the memory slots with air and a brush

How can I further diagnose the problem?
Suggestions welcome...

THANKS!

Franou

Francoise Frigola <verdonmescla@yahoo.com> wrote in news:ced75620-cfe6-
[email]4245-9966-d77a5efac956@v26g2000prm.googlegroups.com[/email]:
[color=blue]
> - Cannot boot from diskette[/color]

Are you saying that you tried to boot from dikette and it failed? Or that
you just don't have a floppy on that PC?

[color=blue][color=green]
> > - Cannot boot from diskette[/color]
>
> Are you saying that you tried to boot from dikette and it failed? Or that
> you just don't have a floppy on that PC?[/color]

It fails!

It find the diskette, but just reboots again.

Franou

PS: I even made a new Bootup diskette in case the one I had was not
good.
[color=blue][color=green][color=darkred]
> > > - Cannot boot from diskette[/color][/color]
>[color=green]
> > Are you saying that you tried to boot from dikette and it failed? Or that
> > you just don't have a floppy on that PC?[/color]
>
> It fails!
>
> It find the diskette, but just reboots again.
>
> Franou[/color]