Acer Aspire 4250 Notebook Service Manual
Page 70
... or options Restore a BIOS when it becomes corrupted. If battery pack does not contain power to run Flash. 1. NOTE: NOTE: Do not install memory related drivers (XMS, EMS, DPMI) when Flash is used . Prepare a bootable USB HDD. 2. Boot system from bootable USB HDD. NOTE: NOTE: Use AC adaptor power supply when...
... or options Restore a BIOS when it becomes corrupted. If battery pack does not contain power to run Flash. 1. NOTE: NOTE: Do not install memory related drivers (XMS, EMS, DPMI) when Flash is used . Prepare a bootable USB HDD. 2. Boot system from bootable USB HDD. NOTE: NOTE: Use AC adaptor power supply when...
Acer Aspire 4250 Notebook Service Manual
Page 134
...click on the desktop and select Personalize Display Settings. If desktop display resolution is faulty and should be replaced. Roll back the video driver to Maintenance Flowchart. Remove any memory cards and CD/DVD discs. 8. Start the computer. Abnormal Video 0 If the video appears... alone as this may reduce display brightness. 2. Click and drag the Resolution slider to Disassembly Process. 3. Remove and reinstall the video driver. 6. If permanent vertical/horizontal lines or dark spots appear in the application. Refer to Online Support Information. Readjust if necessary. 4. ...
...click on the desktop and select Personalize Display Settings. If desktop display resolution is faulty and should be replaced. Roll back the video driver to Maintenance Flowchart. Remove any memory cards and CD/DVD discs. 8. Start the computer. Abnormal Video 0 If the video appears... alone as this may reduce display brightness. 2. Click and drag the Resolution slider to Disassembly Process. 3. Remove and reinstall the video driver. 6. If permanent vertical/horizontal lines or dark spots appear in the application. Refer to Online Support Information. Readjust if necessary. 4. ...
Acer Aspire 4250 Notebook Service Manual
Page 139
... sure that : The device is properly installed There are no device conflicts No hardware is not muted. If updated recently, roll back the audio driver to Start´ Control Panel´ System and Maintenance´ System´ Device Manager. Internal Speaker Failure Sound Problems 0 Perform the following : Figure 4-6. Confirm that ...
... sure that : The device is properly installed There are no device conflicts No hardware is not muted. If updated recently, roll back the audio driver to Start´ Control Panel´ System and Maintenance´ System´ Device Manager. Internal Speaker Failure Sound Problems 0 Perform the following : Figure 4-6. Confirm that ...
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 DXE Phase POST Code Table Functionality Name (Include\ PostCode.h) Phase Post Code...
... 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 DXE Phase POST Code Table Functionality Name (Include\ PostCode.h) Phase Post Code...
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...