My PC will not work with web browsers. Help?

[polar vortex]

One website says it could be to do with your date & time settings and suggests you reset them. Here are their instructions:

To set your PCs date and time, do the following steps:
1. Turn on your computer.
2. On the lower right of your taskbar, you will see the date and time.
3. Left click on the date and time.
4. It will open a small pop up screen showing a small calendar and a clock.
5. Select Change Date And Time Settings.
6. A new window will open, again select Change Date and Time
7. Now the tab to select the date and time will appear, set the date and time correctly.
8. On the bottom part of the window, select Apply.
9. Select Okay.
10. Now, Open your browser. If it is already open, close it then open it again.
If the problem persists, restart the PC after changing the time.