Acer Aspire M3420 Desktop Service Guide
Page 100
... the checkpoints in the bottom right corner of the screen during POST. System is limited, since it only displays checkpoints that occur after the video card has been activated. BIOS damaged. In most cases, a checkpoint card is ready. Graphics card error/not installed, graphics card memory error... or graphics card BIOS checksum error. Beep codes are used when an error occurs before the system video has been initialized. CMOS damaged. Not all computers using AMIBIOS enable this feature. One long beep then two short beep Two short beeps...
... the checkpoints in the bottom right corner of the screen during POST. System is limited, since it only displays checkpoints that occur after the video card has been activated. BIOS damaged. In most cases, a checkpoint card is ready. Graphics card error/not installed, graphics card memory error... or graphics card BIOS checksum error. Beep codes are used when an error occurs before the system video has been initialized. CMOS damaged. Not all computers using AMIBIOS enable this feature. One long beep then two short beep Two short beeps...
Acer Aspire M3420 Desktop Service Guide
Page 101
... the bottom right corner of I /O initialization is currently executing. Stack will hang here if checksum is given to it only displays checkpoints thatoccur after the video card has been activated. Set stack. Disable CACHE before system memory is disabled. CPUID information is tested. Main BIOS checksum is stored in scratch CMOS...
... the bottom right corner of I /O initialization is currently executing. Stack will hang here if checksum is given to it only displays checkpoints thatoccur after the video card has been activated. Set stack. Disable CACHE before system memory is disabled. CPUID information is tested. Main BIOS checksum is stored in scratch CMOS...