Question about HP Pavilion dv4155cl (EC321UA) PC Notebook
I have the same Pavillion DV4155CL laptop and had to reload XP from scratch with no HP CD's.
HP failed to add the video driver to their support page but I hot it to work by simply going to another DV4000 series page (I used the DV4000CTO) and installed it.
Fortunately, the video chipset is identical. Good luck.
Posted on Sep 09, 2009
You can download the latest video driver from the HP WEB site, their support/download page. Make sure you select your model laptop and the Windows version of your video card.
Are you sure that your video driver need reinstalling?
If you are not sure that your LCD screen is working, connect an external monitor to the laptop's video output connector.
Posted on Jan 25, 2009
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Posted on Jan 02, 2017
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