eMachines EL1852 Support Question
eMachines EL1852 Support Question
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Question posted by iscar on July 7th, 2014
How To Clear Cmos For Emachine El1852g-52w
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Current Answers
Answer #1: Posted by BusterDoogen on July 7th, 2014 10:42 AM
BusterDoogen
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October 30th, 2011 Points: 28,565,427
Go here to page 68 of the manual for the reset process.
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Related eMachines EL1852 Manual Pages
eMachines EL1852 Service Guide - Page 1
eMachines EL1852 Service Guide
PRINTED IN TAIWAN
eMachines EL1852 Service Guide - Page 2
Revision History
Refer to the table below for changes made on this version of the EL1852 Desktop Computer Service Guide. Date
Chapter
Updates
ii
EL1852 Service Guide
eMachines EL1852 Service Guide - Page 7
... 3
Environmental Requirements 3
System Tour 4
Front View
4
Rear Panel 5
System Utilities 7
CMOS Setup Utility 7 Accessing the Setup Utility 8 Navigating through the Setup Utility 9 Setup Utility ... Checkpoints 42 POST Error Indicators 46 BIOS Recovery 58 BIOS Update 59 Clearning CMOS 63
System Architecture 65
Block Diagram 65 Mainboard Layout 66 Jumper Setting 67...
eMachines EL1852 Service Guide - Page 31
...the power cord from the computer. 5. Place the computer on how to disassemble the desktop computer for the different components vary in size. Disassembly Requirements
In performing the disassembly ...perform the disassembly procedures in reverse.
• The screws for maintenance and troubleshooting.
EL1852 Service Guide
23 Turn off the power to avoid mismatches when putting back the ...
eMachines EL1852 Service Guide - Page 50
...RAM below 1MB Read-Write including E000 and F000 shadow areas but closing SMRAM.
42
EL1852 Service Guide Checkpoints may occur during the pre-boot process. This display method is limited...code. If memory sizing module not executed, start memory refresh and do memory sizing in scratch CMOS. Set stack. Main BIOS checksum is disabled. The Bootblock-Runtime interface module is moved to ...
eMachines EL1852 Service Guide - Page 51
...EL1852 Service Guide
43 The following table describes the type of the flash part. Some interrupt vectors are based on CMOS... update CMOS with ...successfully. Disable ATAPI hardware. If the CMOS checksum is corrupt. Initializes both the... battery power is OK and CMOS checksum is OK. Start reading...CMOS as mentioned in PCI devices. Check CMOS diagnostic byte to checkpoint EB. Verify CMOS...
eMachines EL1852 Service Guide - Page 53
...7C 84 85 87 8C 8D 8E 90 A0 A1 A2
A4 A7
A8 A9 AA AB AC B1 00 61-70
Description Updates CMOS memory size from memory found in F000h segment with this value may be different from base memory. Clean-up work needed . Wait...Device Initialization (function 1); Check boot password if installed. Function 2 searches for Extended BIOS Data Area from one platform to the next. EL1852 Service Guide
45
eMachines EL1852 Service Guide - Page 55
...not find a bootable device in the drive, but could not find a bootable device in the CMOS (offset 15h) mismatches with the mainboard. This message occurs on systems using ECC enabled memory ...unable to boot from faulty memory modules.
EL1852 Service Guide
47 Memory
Message Gate20 Error
Multi-Bit ECC Error
Parity Error RAM R/W test failed CMOS Memory Size Wrong
Description
The BIOS is ...
eMachines EL1852 Service Guide - Page 58
... by an incomplete description of the PCI Interrupt Routing of the 8254 timer. POST error while trying to clear the NVRAM data. BIOS could not initialize the Master Interrupt Controller.
More than one system device is enabled..., often indication a problem with system hardware.
50
EL1852 Service Guide Virus-related
Message BootSector Write!! Error initializing secondary DMA controller.
eMachines EL1852 Service Guide - Page 59
... present in the BIOS setup but the device is required to be resolved by a program other than the BIOS or that the CMOS is enabled in the AMIBIOS8 ROM. EL1852 Service Guide
51
This error can be resolved by using AMIBIOS Setup. PS/2 keyboard is pressed during the BIOS POST.
This error...
eMachines EL1852 Service Guide - Page 60
...Symptoms
Symptom/Error Processor fan does not run but fails to enter power
• Enter CMOS Setup and load the default settings.
NOTE If you cannot find a symptom or an...modules are installed properly and the contact leads are clean before diagnosing any system problems.
52
EL1852 Service Guide the Control Panel.
• Reload software from Recovery CD.
Processor test failed....
eMachines EL1852 Service Guide - Page 61
...button to try to light, but no messages are set correctly before diagnosing any optical drive problems.
EL1852 Service Guide
53 Software displays a reading CD/DVD error. Check with a known good disc.
&#...8226; CD/DVD-ROM is not inserted properly. • CD/DVD-ROM is configured correctly in CMOS Setup and that cable/jumper are displayed. CD/DVD-ROM drive LED flashes for more than 30 ...
eMachines EL1852 Service Guide - Page 62
...8226; Mainboard
• Monitor signal connection/cable • Video adapter card • Mainboard
54
EL1852 Service Guide Data/fax modem software program invoked but cannot receive/send data/fax Fax/voice modem... normally;
For the PCI modem, make sure Power on By Ring in the Standard CMOS Feature of BIOS Setup is connected to Enabled. Action/FRU
• Ensure the information...
eMachines EL1852 Service Guide - Page 63
...Ensure the printer driver is not running. Action/FRU • Ensure the Soft-off by PWR-BTTN in CMOS Setup (under
Power Management) is not set to Instant-off. • Power switch cable assembly
•... software shutdown from Recovery CD.
• Power supply • Mainboard
EL1852 Service Guide
55 No system power, or power supply fan is properly installed.
Printer-related Symptoms Symptom...
eMachines EL1852 Service Guide - Page 66
...execute the BIOS recovery process. Press F9 to run the CMOS Setup Utility. 6. Unplug the USB storage device. 5. ... BIOS recovery process. • The BIOS crisis recovery disk should be cleared during a BIOS flash procedure (e.g. Press Delete to load the system default...or Windows
Vista OS. Select Ok, then press Enter.
58
EL1852 Service Guide a power outage) can corrupt the BIOS code, which...
eMachines EL1852 Service Guide - Page 71
.... 13. If necessary, remove any expansion board, peripheral, and system cables that prevent access to the CMOS clear
jumper. 7. Reinstall the side panel. 12. Unplug the network cable and all peripherals. 2. Remove the side panel. 6. EL1852 Service Guide
63 Reinstall any expansion boards, assemblies or cables that have previously been removed. 11. Connect...
eMachines EL1852 Service Guide - Page 74
... PCIE1 PCIEX1-1
Component Processor socket Heat sink fan cable connector 240-pin DDR3 SDRAM slot 240-pin DDR3 SDRAM slot 24-pin ATX power connector Clear CMOS jumper SATA cable connector Internal buzzer Power button/LED cable connector Front panel USB headers SPDIF out header Front panel audio header PCI Express x16...
eMachines EL1852 Service Guide - Page 76
... set system configuration options. Jumpers with more than one pin are Placed on the correct pins.Pin 1 is label
Jumper CLR_CMOS1
Type 3-pin
Description Clear CMOS
Setting (default)
1-2: NORMAL 2-3: CLEAR Before clearing theCMOS, make sure toturn off the system.
CLR_CMOS1
68
EL1852 Service Guide When setting the jumpers, ensure that the jumper caps are numbered.
eMachines EL1852 Service Guide - Page 99
...,front 4 specifications 89 troubleshooting 54
B
beep codes 56 BIOS
checkpoints 42 clear CMOS 63 crisis recovery disk 58 recovery 58 specifications 87 update, DOS mode 59...checkpoints ACPI runtime 46 DIM 45 overview 42 POST 43
Chipset Features Advanced 13
CMOS clear 63 CMOS Features
Index
Standard 11 CMOS Setup Utility 7
access 8 navigation keys 9 connectivity options 1 specifications 89 connector...
eMachines EL1852 Service Guide - Page 101
... set 19 system time 11 system views front view 4 system weight 3
T
temperature monitoring 16 operating 3
troubleshooting BIOS checkpoints 42 BIOS recovery 58 BIOS update 59 clearing CMOS 63 component failure 52 POST error indicators 46
type processor 10
U
undetermined problems 57 USB ports
front 4, 5 user password 18
V
VGA port 5 video
controller 1 troubleshooting...
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