Internet Disconnecting Frequently while working on Battery with Hp Pro Book 430 Laptop

The below steps had fixed the issue.

1.  Click the Start button.
2. Type Power Options and press Enter.
3. Click Continue if prompted.
4. Click “Change plan settings” under the power plan that is currently selected.
5. Click “Change advanced power settings”.
6. In the Power Options box, click the + next to “Wireless Adapter Settings” to expand it.
7. Then click the + next to “Power Saving Mode”.
8. In the list that appears next to On battery, select “Maximum Performance”.
9. Click OK.