G62-220CA CMOS 502 error Laptop boot but die in 4 second windows 7 home premium

[arashsalimi]

I will turn on the laptop it start by a message to press ESC key then automatically shutdown.

I have checked the memory on another laptop and it is OK, hard drive the same way. 

I have tried both hard reset and even removed the cmos battery and put it back.it still do the same thing

after the hard reset it comes with a screen about corrupt CMOS error 502 and it say It will reset it and then it boot

all the suggestion like F10 or F11 or F1 had no effect  and same story.

Can I re flash the bios ?

thanks

[banhien]

Hi,

This fix is from HP:

  http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=125&prodSeriesId=...

Regards.

[arashsalimi]

Thanks for replay but as my post said the computer shutdown itself in 4 second and even doesnot letme to boot to any device so I can use the methods that was suggested.

Thanks again