IBM ThinkCentre 8127 Hardware Maintenance Manual

Contents

Flash update proceduresThis section details how to flash (update) the BIOS.Updating (flashing) BIOS from a diskette1. Insert a system program update (flash) diskette into the diskette drive (drive A)in the computer. System program updates are available athttp://www.ibm.com/pc/support/ on the World Wide Web.2. Turn on the computer. If it is on already, you must turn it off and back onagain. The update begins.Updating (flashing) BIOS from your operating systemNote: Due to constant improvements being made to the IBM Web site, Web pagecontent (including the links referenced in the following procedure) is subjectto change.1. From your browser, type http://www.ibm.com/pc/support/ in the address fieldand press Enter.2. Locate the Downloadable files for your machine type.3. Under Select your product, choose your machine type and click Go.4. In Downloadable file by category, click BIOS.5. Under Download files - BIOS by date, click your machine type.6. Scroll down and look for a .txt file that has instructions for Flash BIOS updatefrom the operating system. Click the .txt file.7. Print these instructions. This is very important since they are not on the screenafter the download begins.8. From your browser, Click Back to return to the list of files. Carefully follow theprinted instructions to download, extract, and install the update.Recovering from a POST/BIOS update failureIf power to the computer is interrupted while POST/BIOS is being updated (flashupdate), the computer might not restart correctly. If this happens, perform thefollowing procedure (also known as a Boot-block Recovery):1. Turn off the computer and any attached devices, such as printers, monitors,and external drives.2. Unplug all power cords from electrical outlets, and open the cover. See“Opening the cover” on page 25.3. Locate the Clear CMOS/Recovery jumper on the system board. SeeIdentifying parts on the system board in the chapter for your model type.4. If necessary, refer to Installing adapters to remove any adapters that impedeaccess to the Clear CMOS/Recovery jumper.5. Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3.6. Replace the cover. See Replacing the cover and connecting the cables in thechapter for your model type.7. Reconnect the power cords for the computer and monitor to electrical outlets.8. Insert the POST/BIOS update (flash) diskette into drive A, and turn on thecomputer and the monitor.9. After the update session is completed, there will be no video and the series ofbeeps will end. Remove the diskette from the diskette drive, and turn off thecomputer and monitor.148 Hardware Maintenance Manual