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Blank Display... sometimes? [CMOS SUM ERROR]

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#1 DomMartinelli


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Posted 18 November 2013 - 10:06 PM

Hello there.
I'm having an issue with my HP pavillion G7. I've had errors in the past with the screen, which I replaced myself. The replacement was successful until a possibly unrelated CMOS error began to appear. I also had a bad battery which was replaced. The 502 cmos checksum invalid error appears at boot at times, once I reset it though it usually boots in windows and the clock is messed up. The computer usually would just turn on and display a blank screen. I decided to replace the cmos battery, but this didn't help.
It still is displaying the error, mixed in with a blank display at other times. I've also tried resetting the bios and updating it... but still no avail.
I'm not sure whether or not this is a hardware or a software issue. I'm willing to reformat my hdd if necessary. 

Anyone have any suggestions on how to fix this?
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130828-1532)
   Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
       System Model: HP Pavilion g7 Notebook PC
               BIOS: Default System BIOS
          Processor: AMD Phenom™ II P650 Dual-Core Processor (2 CPUs), ~2.6GHz
             Memory: 4096MB RAM
Available OS Memory: 3834MB RAM
          Page File: 2143MB used, 5524MB available
        Windows Dir: C:\Windows
    DirectX Version: DirectX 11
DX Setup Parameters: Not found
   User DPI Setting: Using System DPI
 System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
     DxDiag Version: 6.01.7601.17514 32bit Unicode

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#2 hamluis



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Posted 19 November 2013 - 10:38 AM

See HP Documentation .



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