When I discovered that my computer was turned on a while ago, the time always changed back to 2000. I suspect that the BIOS battery is dead. Hey, really, after changing it, everything is normal. It turns out that this computer has been used for four years, and it is normal even if there is no power.
Checked online, many friends also encountered the problem of incorrect system boot time, and some of them did not work if the battery was replaced. Be careful that the battery bought near the road is also empty or low. It is best to go to a regular place to buy , Anyway, three dollars!
You can also enter the BIOS to check whether the settings are correct. (Start the computer and type DEL to enter the BIOS, select the first item)
Check if your CMOS battery has power.
If it is determined that the battery has power, it may be a virus, use 360 ​​or the like to first clean the system and use anti-virus software.
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