When I wanted to start my laptop today (an Acer Aspire 8920G), the laptop started beeping. I know this beeping is a POST error code, but I can not figure out which one it is. The motherboard of the laptop is manufactured by Phoenix, so I looked up these POST codes: http://www.bioscentral.com/beepcodes/phoenixbeep.htm The beeping is in the form 1-1-1-1 (short beeps, repeating and even without ending), but this code is not mentioned by the manufacturer. Does anybody know what could be the problem? I don't know if it is relevant, but since a couple of months the CMOS battery was degrading. The laptop couldn't keep track of the time. Maybe a failing CMOS battery could be the problem?