Dell Technology Guide
Page 278
... setup program and correct the date or time (see "Entering the System Setup Program" on page 308). YOU SHOULD UNDOCK, REDOCK, ATTACH THE POWER ADAPTER, OR PLUG IN THE POWER CORD. THE AMOUNT OF SYSTEM MEMORY HAS CHANGED. TO RESOLVE THIS ISSUE, TRY TO RESEAT THE MEMORY. U N S U P P O R T E D M... E M O R Y. If the problem persists, replace the CMOS battery. PLEASE CONNECT A DELL XXX-W AC ADAPTER OR GREATER FOR BEST SYSTEM PERFORMANCE. ...
... setup program and correct the date or time (see "Entering the System Setup Program" on page 308). YOU SHOULD UNDOCK, REDOCK, ATTACH THE POWER ADAPTER, OR PLUG IN THE POWER CORD. THE AMOUNT OF SYSTEM MEMORY HAS CHANGED. TO RESOLVE THIS ISSUE, TRY TO RESEAT THE MEMORY. U N S U P P O R T E D M... E M O R Y. If the problem persists, replace the CMOS battery. PLEASE CONNECT A DELL XXX-W AC ADAPTER OR GREATER FOR BEST SYSTEM PERFORMANCE. ...