Decreased resolution of compaq presario CQ40 notebook pc

[dhiren88]

My compaq presario CQ40 notebook pc resolution is decreased. And the max. resolution has set lower than original so the display is not on the whole screen and there is a black strip on the right vertically.

Yet display is complete but smaller than original. I have tried reinstalling graphics driver but no improvement.

Please help what may be the problem. Can damaged display cable be a reason?

[Riddle_Decipher]

@dhiren88

Welcome to the HP Forums,

We'll be with you until it's all sorted & beyond!

Could you attach a screenshot of your display for a better understanding of the issue?

Meanwhile, here's what you could do,

Try with an alternate/external monitor to check if you have the same issues with the display,

• If the alternate monitor works fine whereas the laptop continues to have issues, this could be a hardware LCD malfunction,
• However, if the monitor doesn't work either, you may want to reinstall the graphics card drivers and update the same along with BIOS updates: Click here to find & install the same.

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us within 24 - 48hrs, and have a good day, ahead.

[dhiren88]

Hey Riddle,

Thanks for your reply.

I tried by connecting other display screen but the same problem was there. I just want to say that display is not filling up the screen. I am attaching some screenshots. Please have a look at them. Even when I enter the BIOS, there also the same problem.

I also installed latest version of HP Support Assistant and checked for any updates. But there was nothing.

Please help me out.

[Riddle_Decipher]

@dhiren88

Thank you for replying with this detailed response,

I appreciate your time and efforts,

I suggest you reinstall the graphics card drivers from the device manager, then update the BIOS using this link: Click here and if that doesn't work, this is a possible hardware defect, please refer to my private message to have the device repaired:

Please check your Private message icon on the upper right corner of your HP Forums profile, using the blue envelope: 

Click here for more details on how to access the private messages on HP Forums

I hope your day gets better, good luck.