Hello and welcome to Bleeping Computer.
Check this web page out for Dell related BIOS beep codes and BIOS errors.http://www.bioscentral.com/postcodes/dellbios.htm
You said 7 beeps, but those 7 beeps could contain a pattern such as the following, to which I included the code below and its reason.1 - 4 - 1 - 1 = RAM failure on data bits xxx of high byte on memory bus: Reseat the memory modules
That is the only one I can find that equals the number 7.
Let me know if you can get a definite pattern by following the codes listed at the web page above.
Edited by MrBruce1959, 13 September 2011 - 07:10 PM.