Mark,

Thoughts, suggestions?

A quick search (DELL 780 beeps) turns up this:

http://ebay.redplanettrading.com/des...M_DT/diags.htm

Look under "beep codes" and see if you recognise the pattern.

.... It could well be that your 'puters memory has become unseated (hopefully
just that).

Regards,
Rudy Wieser