Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Possible Duplicate:
Can I use my laptop as a second monitor for my desk computer?

I have a spare laptop and I'd like to use it as a second monitor for my laptop.

Any suggestions on how to do this?

Perhaps if you got a (male-male or maybe it's female-female?) video cable and plugged the output of the primary laptop into the input of the "slave"?

I think I've seen software for this before.

I see at least one solution: ($40)

share|improve this question

marked as duplicate by Kez, th3dude, ChrisF, Gnoupi, Troggy Jan 19 '10 at 21:13

This question was marked as an exact duplicate of an existing question.

Duplicate, see… – Kez Jan 19 '10 at 20:32
@th3due19 - nice idea editing the post, but when it does get closes this information will be added by the system so it'll be duplicated. – ChrisF Jan 19 '10 at 20:51
@th3dude19 Please don't edit duplicate links into posts. It causes double work when closing the question, as it now needs to be edited and gets bumped to the home page. – BinaryMisfit Jan 19 '10 at 21:16
@Diago and @ChrisF - I actually had no idea that was done by the system. I had seen it done it other dupes and figured I'd help out. My bad! – th3dude Jan 19 '10 at 21:47
up vote 0 down vote accepted

ZoneScreen 'might' work with Vista if you follow the workaround posted on their website.

Windows Vista and Windows 7 Limitations

These operating systems have two important limitations affecting ZoneScreen display driver. First, due to Windows Display Driver Model (WDDM) architecture, ZoneScreen virtual display driver can't run unless leagcy XP drivers are installed on main video adapter. Also, for Windows Vista x64 and Windows 7 x64 digital signature enforcement for kernel drivers is also applied (ZoneScreen driver do have authenticode signature but appropriate digital certificate costs a lot). So, virtual display driver is not loaded unless this enforcement is disabled.

share|improve this answer
The 'correct answer' on the duplicate question lists this as the answer. How about closing this as a duplicate instead of going for points :) – th3dude Jan 19 '10 at 20:43
@th3dude19 - the other thread is dealing with the issue in general, here it's about a specific OS, and none of the limitations regarding ZoneScreen and Vista/7 is dealt with accordingly, so it's not that easy ... – Molly7244 Jan 19 '10 at 21:00
@Molly - No worries, was mainly joking, but you have a good point. – th3dude Jan 19 '10 at 21:47

Not the answer you're looking for? Browse other questions tagged or ask your own question.