1, browser problem, or it has been lost or damaged. It is recommended to clear the cache or reinstall it (or it may be incompatible, please change it).

Or the browser crashes, you can use Tencent computer housekeeper-computer clinic-to get online abnormally, and IE can fix it.

2. The network speed is unstable and smooth. Tencent computer housekeeper traffic monitoring, check it out. If the uploaded traffic is particularly heavy, you should be worried. It may be poisoned, and your information is leaking.

3. Download a flash player. Is the webpage automatically blocked? There will be a prompt under the tab.

4. View DNS settings. Tencent Computer Butler Toolbox -DNS Optimization

5. See if it is IE poisoning.

I suggest you try antivirus first, safety first, and try Tencent Computer Manager. Anti-virus protection is good.