|Boot into the BIOS screens (delete key at start up) Check the date and time. If wrong correct them. Then shut down and unplug the computer for 20 seconds. Plug in teh computer and boot into the BIOS screens again. If the date and time are correct then there is nothing wrong with your CMOS battery. |
If the date reverted to an earlier date then the battery is either dead, installed up side down, or the contacts are not solid.
You were asked to post ALL the system specs in #4 above. The power supply model, video card model, full model number of the motherboard, RAM type, etc.