Windows 7: Acronis Try and Decide / error / BOOTMGR is corrupt.System cannot boot

I am using Try and Decide to install a software . When I reboot after install, the computer does not start Windows 7 Ultimate 64. I just have a black screen with the message "BOOTMGR is corrupt.System cannot boot!!! I power off and start up again and the Acronis loader comes up with the choice to Try and Decide or go back and disable.
I tried Try and Decide without installing the software and just rebooting and the same result.
If I choose to revert back to disable Try and Decide, then Windows boots up ok.
I uninstalled - reinstalled Acronis but same results.
Can you help me, please ? Thats really annoying.
Thanks in advance.
PS : Do you know some similar programs ( like Try and Decide from Acronis ) which give me the option to install something on my PC, but to have the option to keep it or discard changes during reboot ?

Hello stereo,

While I do not know how to resolve your issue, Sandboxie is an excellent program to use instead of Acronis Try and Decide. I did hear a lot of issues regarding Acronis Try and Decide, I think Sandboxie will be safer, but I don't think it will have the option to do discard/keep it during reboot. :)

I use 3 uninstall programs:
- Revo Uninstaller (everyday use)
- Mirekusoft Install Monitor (freeware) - works well, but not (IMO) as thorough as the next one (but still very good):
- Total Uninstall (30 day free trial, then costs $30 (US) - tracks every durned thing that happens while installing a program - then gives you the option of uninstalling all of it!

Sandboxie and Acronis Try and Decide are very different applications to do very different things. I don't see anyway that Sandboxie could be a suitable replacement for Acronis Try and Decide.

So, there is no similar software like Acronis Try and Decide ?

There is similar software to Try&Decide, it's just not Sandboxie. Sorry, I'm on my mobil right now thus not typing up a long response.