I have dh55pj board and recently updated BIOS.In BIOS setup,I have loaded defaults value by pressing F9, then changed time and date and pressed F10 to save and exit.But still appears "cmos checksum error","cmos time not set".Please help me....
Download TC0048P.BIO file : https://downloadcenter.intel.com/download/20725/BIOS-Update-TCIBX10H-86A-?product=48955 Download BIOS Update [TCIBX10H.86A] and update your bios using bios recovery method (with configuration jumper removed). Refer to read.me file to instruction how to recover bios or to the following instructions:https://www.intel.com/content/www/us/en/support/boards-and-kits/000005630.html?wapkw=bios+recovery Recovery BIOS Update Instructions for Intel® Desktop Boards
In addition refer also to table 26 in your board specification: https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/desktop-boards/H55_P55/DH55P... https://www.intel.com/content/dam/support/us/en/documents/boardsandkits/desktop-boards/H55_P55/DH55P...…
Note that the bios may be reset to its defaults by pressing on F9 only in Configure mode (i.e. the configuration jumper between pins 2-3) instead on Normal position (between pins 1-2).
Hope this helps
You did mention that two times you have replaced the CMOS battery. Still I want clarify:
1. Did you also performed bios recovery as I've suggested in my post above?
2. While you have pressed on F9 to set bios defaults, was the configuration jumper installed between pins 2-3?
And finally in my opinion, Resetting or reinstalling Windows, will not fix CMOS checksum error. This error is generated by the bios firmware rather than Operating System. If bios recovery and/or resetting bios to default setting doesn't fix this problem, try to rollback to the previous bios version which worked good (do this using bios recovery method).
T/he bios recovery process is described step by step under this link:https://www.intel.com/content/www/us/en/support/boards-and-kits/000005630.html?wapkw=bios+recovery Recovery BIOS Update Instructions for Intel® Desktop Boards . While you enter to this page press on Recovery with USB device and you will see the step by step instructions. The USB device shall be formatted to FAT32. Download TC0048P.BIO file : https://downloadcenter.intel.com/download/20725/BIOS-Update-TCIBX10H-86A-%3Fproduct%3D48955 Download BIOS Update [TCIBX10H.86A]
That means that your video is OK, but for some reason the recovery process is not starting. Could be that your USB is not correctly formatted to FAT32. Such situation happen if it was used for some Linux project before. Try to work with other USB or correct formatting using SD Formatter tool: https://www.sdcard.org/downloads/formatter_4/eula_windows/ SD Memory Card Formatter for Windows Download - SD Association . Download this tool, install and format using this tool your USB to FAT32. Now copy valid .bio file and try again. Wait few minutes to process completion.
The checksum error happened again without any changes in bios? Any way, try to reset reset bios:
1. Power down your PC and disconnect the power cable.
2. Place Configuration jumper between pins 2-3.
3. Reconnect the power cable and power On you PC. After POST, setup will run automatically and Maintenance menu will be displayed.
4. Press F9 followed by "Y" to reset bios settings. Press f10, followed by "y" to save the settings and exit.
5. Power down the computer, disconnect the power cable and replace configuration jumper between pins 1-2 (normal position).
I have done all of the above, including a secure update, disconnecting the battery for 5min with power unplugged, updating to the defaults, updating to the latest BIOS, etc.
I have replaced the CMOS battery on one, without resolving the issue, replaced the BIOS chip on the other, without resolving the issue. The CMOS retains all of the other settings (boot order, EFI only boot, etc) it is just the date/time that is the problem and the checksum error.
I have several 5 identical NUCs and only 2 of them have this problem: all the others are fine. Same EFI, same basic configuration.
This is annoying but the machines are still usable - either I permanently have them connected to the power supply or I have to update the time after a longer than usual boot.
Any other ideas?