Acer Aspire 4250 Notebook Service Manual
Page 70
... loading BIOS Flash, do not boot system. NOTE: NOTE: Flash utility has auto execution function. 2-14 System Utilities NOTE: NOTE: Do not install memory related drivers (XMS, EMS, DPMI) when Flash is used . Use the Flash utility to update the system BIOS Flash ROM. NOTE: NOTE: Use AC adaptor power supply...
... loading BIOS Flash, do not boot system. NOTE: NOTE: Flash utility has auto execution function. 2-14 System Utilities NOTE: NOTE: Do not install memory related drivers (XMS, EMS, DPMI) when Flash is used . Use the Flash utility to update the system BIOS Flash ROM. NOTE: NOTE: Use AC adaptor power supply...
Acer Aspire 4250 Notebook Service Manual
Page 134
... Click Apply and check the display. 4. Reseat the memory modules. 10. Refer to LCD Picture Failure. 7. Remove and reinstall the video driver. 6. Disconnect power and all Windows. Boot the computer. Refer to Disassembly Process. Run the Windows Memory Diagnostic from the operating system DVD ...normal, right-click on battery alone as this may reduce display brightness. 2. If display size is discovered. 9. Roll back the video driver to Disassembly Process. 3. If permanent vertical/horizontal lines or dark spots appear in the same locations on the external display only, refer...
... Click Apply and check the display. 4. Reseat the memory modules. 10. Refer to LCD Picture Failure. 7. Remove and reinstall the video driver. 6. Disconnect power and all Windows. Boot the computer. Refer to Disassembly Process. Run the Windows Memory Diagnostic from the operating system DVD ...normal, right-click on battery alone as this may reduce display brightness. 2. If display size is discovered. 9. Roll back the video driver to Disassembly Process. 3. If permanent vertical/horizontal lines or dark spots appear in the same locations on the external display only, refer...
Acer Aspire 4250 Notebook Service Manual
Page 139
... Speaker Failure 0 If internal Speakers fail, perform the following , one at a time. 1. Check the Device Manager to the previous version. 4. Remove and reinstall the audio driver. 5. Confirm that other audio applications are no red Xs or yellow exclamation marks There are set mid range: Click the volume icon on the taskbar...´ Control Panel´ Hardware and Sound´ Sound. Internal Speaker Failure Sound Problems 0 Perform the following : Figure 4-6. If updated recently, roll back the audio driver to determine that Troubleshooting 4-11 Boot the computer. 2.
... Speaker Failure 0 If internal Speakers fail, perform the following , one at a time. 1. Check the Device Manager to the previous version. 4. Remove and reinstall the audio driver. 5. Confirm that other audio applications are no red Xs or yellow exclamation marks There are set mid range: Click the volume icon on the taskbar...´ Control Panel´ Hardware and Sound´ Sound. Internal Speaker Failure Sound Problems 0 Perform the following : Figure 4-6. If updated recently, roll back the audio driver to determine that Troubleshooting 4-11 Boot the computer. 2.
Acer Aspire 4250 Notebook Service Manual
Page 147
... initial Variable Service DXE_MTC_INIT DXE 4D MTC Initial DXE_CPU_INIT DXE 4E CPU Middle Initialization DXE_MP_CPU_INIT DXE 4F Multi-processor Middle Initialization DXE_SMBUS_INIT DXE 50 SMBUS Driver Initialization DXE_SMART_TIMER_INIT DXE 51 8259 Initialization DXE_PCRTC_INIT DXE 52 RTC Initialization Troubleshooting 4-19 Platform dependence.
... initial Variable Service DXE_MTC_INIT DXE 4D MTC Initial DXE_CPU_INIT DXE 4E CPU Middle Initialization DXE_MP_CPU_INIT DXE 4F Multi-processor Middle Initialization DXE_SMBUS_INIT DXE 50 SMBUS Driver Initialization DXE_SMART_TIMER_INIT DXE 51 8259 Initialization DXE_PCRTC_INIT DXE 52 RTC Initialization Troubleshooting 4-19 Platform dependence.
Acer Aspire 4250 Notebook Service Manual
Page 149
...BDS_CONNECT_USB_HC BDS 19 USB host controller initialization BDS_CONNECT_USB_BUS BDS 1A USB BUS driver initialization BDS_CONNECT_USB_DEVICE BDS 1B USB device driver initialization BDS_NO_CONSOLE_ACTION BDS 1C Console device initial fail BDS_DISPLAY_LOGO_SYSTEM_INFO BDS 1D Display... SATA controller initialization BDS_START_ISA_ACPI_CONTROLLER BDS 20 SIO controller initialization BDS_START_ISA_BUS BDS 21 ISA BUS driver initialization BDS_START_ISA_FDD BDS 22 Floppy device initialization BDS_START_ISA_SEIRAL BDS 23 Serial device initialization BDS_START_IDE_BUS...
...BDS_CONNECT_USB_HC BDS 19 USB host controller initialization BDS_CONNECT_USB_BUS BDS 1A USB BUS driver initialization BDS_CONNECT_USB_DEVICE BDS 1B USB device driver initialization BDS_NO_CONSOLE_ACTION BDS 1C Console device initial fail BDS_DISPLAY_LOGO_SYSTEM_INFO BDS 1D Display... SATA controller initialization BDS_START_ISA_ACPI_CONTROLLER BDS 20 SIO controller initialization BDS_START_ISA_BUS BDS 21 ISA BUS driver initialization BDS_START_ISA_FDD BDS 22 Floppy device initialization BDS_START_ISA_SEIRAL BDS 23 Serial device initialization BDS_START_IDE_BUS...