I have a Dell Prolinea 4/25s 486. One day working fine shut down for month or so and when rebooted I get 3 beeps then a message that I have a memory error to (F1) resume and (F10)enter setup. Whenever I choose either one I get a screen with a cursor that looks like a backward skeleton key. Any suggestions??? I have tried almost everything that I can think of. Will not let me use a boot disk let me into BIOS or anything???
