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Unable to boot-up Compaq presario 2100 after bios update

  • Laptops
  • BIOS
  • Presario
  • Boot
  • Compaq
Last response: in Laptop General Discussion
June 4, 2009 2:26:00 AM

I updated the bios of my laptop compaq presario 2100 and after that I can't boot-up and there was no POST at all. I googled my problem and was suggested to clear CMOS but when I opened up my laptop I can't find the CMOS battery on the motherboard. Hope someone can guide me here and many thanks in advance

More about : unable boot compaq presario 2100 bios update

November 29, 2009 12:21:07 PM

I've had the same problem (presario 2100) and it looks like updating the
bios can somehow kill the bios. I don't know why Hp/Compaq didn't warn
us all of this darn predicament, specifically of this model and the like.
Anyway here's what you can do as a last resort if nothing else can be
done. You'll have to change the bios-chip which is located in one of the
panel-board opening for your min-pci wifi card at the bottom of your
laptop. Unscrew the panel and you'll see beside the wifi card a very small
ic-chip known as your bios-chip. If you don't know how to extricate this
chip ask someone who knows how to do it for you. Anyway, most likely
the specifications for your chip are as follows:
VERSION: Default
ModelNO: Compaq Presario 2100US
Extra_Info: 32 pin PLCC
Go to and with the info above order a new chip to
replace your old one. My Presario 2100 now works after a long time of
not having a working bios chip and knowing I should never update the
bios, for good.