Cannot connect my Spectre to external ACER XF270H B monitor using HDMI to HDMI.

[bfsbfs]

Connected Spectre to older external monitor without issue. Connected Dell laptop to the ACER monitor without issus . Spectre sees monitor in settings but cannot not detect. Monitor display says no signal.

[Flower_Bud]

@bfsbfs

Thank you for posting on HP Forums,

Flower_Bud is at your service.

As I understand, you're having issues connecting your notebook to an external monitor, 

No worries, as I'll be glad to help you, that said, I'll need a few more details to dissect your concern & provide an accurate solution:

What is the product number of your device? Use this link to find it: http://support.hp.com/us-en/document/c03754824 

(Ensure you do not share any of your personal information such as serial, phone number, email ID, etc...).

Have you tried using another cable? 

I would suggest you try using another cable to connect the notebook to an external monitor. 

Install Windows Update and HP Support Assistant Updates available on your notebook. 

• To open HP Support Assistant, double-click the HP Support Assistant icon .
• Click My devices to see My PC. In this box, there are two options, Updates and Messages
• Click Updates
• From the Updates available section, check the boxes for all the updates, then click Download and install.
• Follow any on-screen instructions.
• Restart your computer.

Also, update graphics drivers from HP websites: Click here

Keep me posted,

Cheers!

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Followed by clicking on "Accept as solution" from the drop-down menu on the upper right corner,

Thank you for posting in the HP Support Forum.  Have a great day!