DesktopOk looks like it's icons only.. WilMa looks interesting and powerful, though probably overly complex for what I'm interested in..
But hopefully there is something..

Another list of programs that do this kind of thing:
http://softwarerecs.stackexchange.com/questions/1816/program-to-save-visible-windows-locations-and-later-restore-the-layout

Another thread with people crying for solution:
https://social.technet.microsoft.com/Forums/windows/en-US/8a9b5aa7-fe33-4e6d-b39b-8ac80a21fdc2/disable-monitor-off-detection-how?forum=w7itprogeneral

Hmm, having looked at that thread, maybe I should install the drivers for the newer HP monitors at my work where I experience this problem. As I said, I don't have this problem with the older LG monitors at home (for which I do have drivers installed).

So in my case it's definitely not about whether it's DisplayPort or VGA because I use the same connectors in both places. The only difference is the brand and age of the monitors and the fact that I haven't installed the drivers for the monitors at work. Otherwise it's the same laptop with the same Win 7, 64-bit, same hardware, same everything.

I am having a problem on my Win7 machine that I never had on my XP machine.

I have 4 monitors.  Overnight the monitors (not the computer) go to sleep.

When they wake up, some of the windows that were open on the desktop jump/move around to different monitors and resize.

It's really quite annoying.

Windows 7, Nvidia modern graphics cards with up to date drivers.

Any ideas how I might stop this from happening? Short of turning off the monitor sleep power options?

i have now six monitors as commented in one of our posts.
I was talking with an Asus technician until boring.
The thing seems to be a limit in the operating system or something like that.

I have the problem when the pc goes into suspend state.
I am using the utility don't sleep.

The "thing" is no finished yet. I download the utility Sleeper because the Asus Technician told me about the diffente ways or modes to suspend.

This was a month ago. Now I usually don't suspend the pc for not "lose" any monitor. I can lose 2, 4 or the 6 and need to reinitiate after any hybernation/suspension.

I will answer in a few days to Asus because they put me two links (one with the microsoft list of suspended and hybernations states s0 to s5) (supposing i am a clever man) with the passmark link to test the possibilities.
I have done nothing until the moment.

1. Code that detects when monitors are about to be put to sleep and saves last state (position, size maximization, etc.) of current windows (or alternatively simply saves them regularly).
2. Code that detects when monitors come out of sleep, and restores these positions/sizes/etc. after they FULLY wake up.

Or code that can detect user idle time and automatically save/restore state based on that, so that if you stop using PC for any specified length of time it will autosave, not dependent on the state of your monitors, kicking in before they sleep. Then restoring last state on any user activity (with a delay, if necessary).