HP dc Computers & Internet • Uploaded on Oct 21, 2013
Maybe one of the memory chips is bad or one of the slots is bad.
Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.
USB controller
Although many computers have an integrated USB controller on the motherboard, many computers may also have an expansion USB controller card. If your USB connectors are not connected directly to the motherboard it is likely your computer is using an expansion card.
Motherboard USB controller
If your USB controller is integrated on the motherboard it is generally best to consult the motherboard documentation or visit the motherboard manufacturer's web page for online documentation regarding your USB controller.
Expansion card USB controller
If your USB controller is an expansion card it would be best to refer to the manufacturer's documentation or visit the manufacturer's web page for additional information about your USB controller.
Note: If your USB controller is currently installed and working and you are running Microsoft Windows 98, Windows ME, Windows 2000, or Windows XP, you can determine the USB controller currently installed by opening the Universal Serial Bus controllers category in Device Manager. For example, "SiS 7001 PCI to USB Open Host Controller" indicates a computer is using the SiS chipset. For more detail specifically to your product, check it!http://h18000.www1.hp.com/products/quickspecs/11876_div/11876_div.htmlbest of luck!
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