My friend with a mac has these desktop widgets which are these countdown clocks. They're useful when you have an exam coming up, or a flight, or any big event like that. Is there such a widget for Windows?
Start your browser, seacht with different search engines and use different phrases:
Best free countdown software
Best free desktop countdown software
Top list desktop countdown software
Free countdown timer
You could try phrases like:
Alarm clock software
Download all the clocks you think you like and try them out.
I'm surten that you will find a clock that you like most.
For now, just fined the clock you need and when done with your Whatever, you could look further for the clock/timer you really want. That will take a lot of time.
Well, I don't know if you have a program that has the option to install it and when you close the virual program with Windows, the installation will be gone too. There will be no installation on the real system installation.