One of the Dell sticks is bad. If you put in just the OCZ stick will it boot? Do this: put in each single stick. The one that casues your puter not to boot is the bad stick. Round file it and buy some new RAM, it's curretnly dirt cheap for a gig or more!!!!
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.