8 ContentsIEEE 1394 Device Problems . . . . . . . . . . . . . . . 118Keyboard Problems . . . . . . . . . . . . . . . . . . . 118External Keyboard problems . . . . . . . . . . . . 118Unexpected characters . . . . . . . . . . . . . . 119Lockups and Software Problems . . . . . . . . . . . . 120The computer does not start . . . . . . . . . . . . 120The computer stops responding . . . . . . . . . . 120A program stops responding or crashes repeatedly 120A program is designed for an earlier Microsoft® Windows®operating system . . . . . . . . . . . . . . . . . . 120A solid blue screen appears . . . . . . . . . . . . 121Dell MediaDirect problems . . . . . . . . . . . . . 121Other software problems . . . . . . . . . . . . . . 122Memory Problems . . . . . . . . . . . . . . . . . . . . 123Network Problems . . . . . . . . . . . . . . . . . . . . 123Mobile Broadband (Wireless Wide Area Network [WWAN]) 124Power Problems . . . . . . . . . . . . . . . . . . . . . 125Printer Problems . . . . . . . . . . . . . . . . . . . . . 126Scanner Problems . . . . . . . . . . . . . . . . . . . . 127Sound and Speaker Problems . . . . . . . . . . . . . . 127No sound from integrated speakers . . . . . . . . 127No sound from external speakers . . . . . . . . . 128No sound from headphones . . . . . . . . . . . . 128Touch Pad or Mouse Problems . . . . . . . . . . . . . 128Video and Display Problems . . . . . . . . . . . . . . 129If the display is blank . . . . . . . . . . . . . . . . 129If the display is difficult to read . . . . . . . . . . 130
