Device goes to sleep too fast (Windows)

1. Go to the start menu, type power options and click on the first result that will appear;
2. Click Change plan settings next to the default power plan (Balanced or Power saver);
3. Click Change advanced power settings;
4. Click Change settings that are currently unavailable (optional);
5. Scroll down to find Sleep and click the plus icon (+);
6. Click the plus icon (+) next to Hibernate after;
7. Click a Setting (if there are more than one) and change the value to 0 so that your computer doesn't hibernate;
8. Click Apply and OK to save the changes.

Maybe you have enabled the screen saver and set it to "Blank". All you need to do is to change the screen saver option to "(None)", i.e. disable the screen saver. In order to disable the screen saver:

1. Go to the start menu type Change screen saver and click on it once it appears;
2. Click the drop-down menu under Screen saver and select (None);
3. Click on Apply and select OK.

Maybe only the hard disk "falls asleep" faster than usual. To check and modify this setting, follow the steps below:

1. Go to the start menu, type power options and click on the first result;
2. Click Change plan settings next to the default power plan (Balanced or Power saver);
3. Click Change advanced power settings;
4. Click on the plus icon next to Hard disk and then next to Turn off hard disk after;
5. Click a setting (if there are more than one) and change the value so that the hard disk doesn't "fall asleep" too fast (the default value is 20 min);
6. Click Apply and OK to save the changes.