FAQ
TL;DR: With 2 laptops, you can’t make one act as a second monitor via HDMI—"There is no such option"—unless it has rare HDMI‑in. [Elektroda, enhanced, post #17625023]
Why it matters: This FAQ helps Lenovo Y50‑70/Y530 users choose realistic dual‑screen options without chasing impossible cabling setups.
Quick Facts
- Typical laptops provide video‑out only; HDMI‑in is rare, seen on a few older gaming models. [Elektroda, enhanced, post #17625023]
- Miracast sends image and sound wirelessly from a source to a compatible display. [“Miracast — jak wysyłać bezprzewodowo obraz i dźwięk”]
- Windows 7/8.1 lack a built‑in way to use a PC as a wireless display, per user findings. [Elektroda, icosie, post #17626265]
- Remote desktop tools (e.g., TeamViewer) mirror control; they do not extend the desktop across two laptops. [Elektroda, soniax, post #17625693]
Can I use my Lenovo Y50‑70 as a second monitor for my Lenovo Y530 via HDMI?
No. Laptops generally lack video input, so one cannot act as a monitor for the other. “There is no such option.” A few older Alienware models had HDMI‑in, but that’s uncommon. [Elektroda, enhanced, post #17625023]
How can I mirror one laptop’s screen on another over Wi‑Fi?
Use TeamViewer. Install it on both laptops, sign in to the same account, and connect. “You can log in from one to the other.”
- Install TeamViewer on both PCs and sign in to one account.
- Add each device so it appears online in your list.
- From laptop A, select laptop B and connect. [Elektroda, kindlar, post #17625170]
Will TeamViewer let me extend the desktop (Word on one screen, Excel on the other)?
No. TeamViewer mirrors the same view on both devices, so you will see identical content. It won’t create an independent second display. [Elektroda, soniax, post #17625693]
Does Windows 10 include a way to project one PC to another?
Yes. Windows 10 offers screen sharing from another computer over the network, provided the hardware supports it. This enables projecting to a PC when compatible. [Elektroda, icosie, post #17625821]
Will this work on Windows 7 or 8.1?
No. Users report no working method to use a laptop as a wireless display on Windows 7 or 8.1. Consider other approaches. [Elektroda, icosie, post #17626265]
Could wireless HDMI make my second laptop act like a monitor?
Wireless HDMI can transmit video without a cable, but it does not turn a laptop into a monitor. One user reported failures when frequently re‑plugging cables, highlighting reliability issues. [Elektroda, icosie, post #17626265]
Do any laptops accept HDMI input from another computer?
Yes, but it’s rare. Some older Alienware laptops had HDMI‑in. Most consumer laptops only provide HDMI‑out, so they cannot display another laptop’s video. [Elektroda, enhanced, post #17625023]
Can I use two laptops plus a monitor for a 3‑screen workspace from one machine?
You cannot use the second laptop as the third screen for the first laptop. As one user put it, “it is impossible” in this context. Use a real monitor for extra displays. [Elektroda, kaczakat, post #17624982]
What is Miracast, and could it help here?
Miracast wirelessly sends image and sound from a source to a compatible display. It can help only if the receiver supports Miracast, which some PCs and adapters do. [“Miracast — jak wysyłać bezprzewodowo obraz i dźwięk”]
What do I need for Miracast to work between PCs?
Both devices must support the feature. Check that the sender and the receiver hardware and drivers support projecting/receiving before trying. [Elektroda, icosie, post #17625821]
