There may be several reasons for your laptop not working with WiFi. Mostly it is WiFi hardware issue. When you first switch on your laptop, it works fine as the operating system reads the hardware, but after some time, lets say 10 min, the wifi card drops and the operation system can not acknowledge the card. This happens because the WiFi card actually shuts off automatically after some time. If you are using any of the Linux distribution and you are facing this issue then the driver may cause this issue HP support.
In your Linux operation system, if your wireless strength is getting down beyond expectation then, there may be two reasons for this. Generally the WiFi card has two antennas to receive the packets. One of those antennas is not permanent. There may be chance that your system settings have made it to switch to the temporary antenna. You can easily switch to permanent antennas by typing a simple command in your terminal. After the execution of the command, reboot your system and then check, if it does not work fine, then again change the antennas setting but typing the same command in your terminal and the check.
If you are using any of the version of windows operation system, then there might be chance that you wireless driver file has been corrupted. You can go to ‘device manager’ and uninstall the network adapter. Now, click on Scan for hardware changes. This will automatically install the required drivers for your wireless connection. Now, you need to make sure that the problem has been fixed. It the issue still persists, then reboot your system and open this with safe mode in networking. Next, you will need to verify that the Adapter is connected properly or not, HP Pavilion Laptop Support Number +1800-608-2315.
If the wireless card has been damaged or if the problem is in internal WiFi adapter, in both the cases you can contact with HP support centre. They will definable solve this issue by either replacing your adapter or by replacing you card. If you are able to diagnose that the problem is with driver, then you should uninstall the old driver and install the new driver. You can take help from the CD also if you want to. After reinstalling the driver, just reboot your system and try to find out is the issue is solved or the issue still persists. If the issue is still there, contact the HP support centre.