EPSA diags are in F2  F12 bios. [URL] Online diags will search for Dell Support Assist. Older Diag partitions were MSDOS based and resided on MBR fat32 partition.  This is no longer the case for Dell. [URL] [URL] SupportAssist is the smart technology, available on your PC that will keep it running like new by removing viruses, detecting issues, optimizing settings and telling you when you need to make updates. Premium Support Plus customers enjoy the full set of SupportAssist features including predictive issue detection and proactive resolution. Review the User Guide for more details.    
MY HD crashed and there goes the diag partition. I am back on the air but would like to run the diags. The web based ones hang gathering info. Tried multiple browsers. Can't find the diags on the driver page. Any thoughts ?   Thanks all,Denis  
Looking for Optiplex 5040 diagnostics ISO