You will need
- Computer battery powering the Bios, a small Phillips screwdriver
The first method does not require opening and manipulation with components inside the system unit. Turn on the computer and continuously tap the Del key until the Bios menu. Use the arrows on the keyboard to select menu "EXIT", and the string "Load Optimized Defaul". Hit "save and exit setup" (Save & Exit Setup").
Wait until the computer reboots and starts the Windows operating system. Yourself and then restart your computer and while restarting press Del until you get into the BIOS menu.
Now run the test on the correct operation. To do this, configure the date and time and click "Save & Exit Setup". Then you should wait for restart and start Windows. Check the date and time that you have set the Bios date and time clock on your desktop. If everything matches, then the Bios again, save settings and working fine.
But there are cases when this method does not help. Then you need to use another way. Completely disconnect the computer from the power supply. Open the system cover by removing the fixing screws.
On the motherboard find the battery Bios. It is a regular round battery that is attached to the motherboard of the computer. It's hard to miss. Using wooden toothpicks or matches the normal remove the battery from the slot. Wait about five minutes and carefully so as not to damage the contacts, insert the battery back into the slot. Close the cover of the system unit.
This action should completely reboot and reset the Bios settings. Enter the Bios (described above), configure all of the settings (date, time, mode of operation of the coolers) and click "Save & Exit Setup". After the computer restarts, see if the settings that were entered in the Bios. If the settings are the same, then the Bios rebooted and is working properly.