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Repair guides for the variations of the Compaq Presario CQ62 laptop. This brand was manufactured from 1993 to 2013, and was owned by HP from 2002 to 2013.

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No display when tried to upgrade cpu in laptop

Upgraded my i3 330m to i5 560m and there is no display but hard drive and fans works and caps lock blinks……

But again had to switch to i3 and it works fine…..

I hv not tried to remove CMOS battery during upgrade to reset the bios, can this step solve the issue

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What is the full model number of the laptop?

Try connecting an external monitor to the laptop and check if it has a display at all. Remember to press F4 to toggle between the displays i.e. laptop only, external only and both on together.

If your laptop has a HDMI port even a TV can be used as an external monitor as long as it has a HDMI input and you have an appropriate HDMI cable to connect the two together.


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md. shadaab sheikh  since it works when your go back to using your i3 330 m and does not work with your i5, your motherboard is having an issue recognizing your processor. Most likely that it is a compatibility issue with your motherboard.

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