A weighted average is a more accurate measurement of scores or investments that are of relative importance to each other. This is often the case with investment portfolios, grade scoring and other statistics. You can find out how to calculate weighted averages. 1. Sit down with your data, a piece of paper and a pencil.
To specify the boot sequence: 1  Start the computer and press ESC, F1, F2, F8 or F10 during the initial startup screen. 2  Choose to enter BIOS setup. 3  Use the arrow keys to select the BOOT tab.  To give a CD or DVD drive boot sequence priority over the hard drive, move it to the first position in the list.
4. Flashing your BIOS with the wrong BIOS file. Most BIOS updates come as a zipped file containing the binary code file, the flash utility, and sometimes a README file. Flashing the erasable memory of your BIOS with the wrong code is almost certain to cause failure the next time you try to boot. Be careful when selecting the file.