Help me with HDMI... PLEASE (urgent!)

[Supreme Calamitas]

So, I'm planning on buying a new pc (probably ryzen 5 5600g, 1650/6500xt) but I don't want to buy a new monitor its simply too expensive, the laptop I was given by my dad has HDMI. I'm planning to use the laptop as the monitor/screen (if that's possible) so can I have a external pc connected via HDMI to the laptop? will it impact performance?

also HDMI is pretty confusing with all its versions, are all those versions backwards compatible? like HDMI 2.1b to HDMI 1.4 / HDMI Standard with Mini/micro

trying to catch that CPU on sale, that's why its urgent 

[Wolly9102]

Connecting a external pc to a laptop monitor is unfortunately not possible since it's only HDMI out and not in.

[Zagna]

Only way you could use your laptops panel as a monitor is like this:

 

[BondiBlue]

You can't just connect a source device (your desktop PC in this case) to a laptop and expect the display to work. The HDMI port on your laptop is an output, not an input. 

[Founders]

What you're proposing won't work as both are outputs only. You can always go on Facebook Marketplace or a similar site and just grab a cheap monitor until you can afford something better. You could probably pick one up around $25-50. 

[IPD]

Goodwill is your friend.

[tikker]

14 hours ago, Marko1600 said:

So, I'm planning on buying a new pc (probably ryzen 5 5600g, 1650/6500xt) but I don't want to buy a new monitor its simply too expensive, the laptop I was given by my dad has HDMI. I'm planning to use the laptop as the monitor/screen (if that's possible) so can I have a external pc connected via HDMI to the laptop? will it impact performance?

As others pointed out, the HDMI port on your laptop is an output, not an input.(unless it explicitely says it's an input which is/was rare however).

14 hours ago, Marko1600 said:

also HDMI is pretty confusing with all its versions, are all those versions backwards compatible? like HDMI 2.1b to HDMI 1.4 / HDMI Standard with Mini/micro

Yes, functionality is covered in a "backwards compatible" way. The version simply tells you the revision that their specification is at and does not represent features that are present. If you are after certain features, look in the product information to see if that specific functionality is implemented.