When the computer is turned on, an application error dialog box will always pop up. How to cancel and find the error of this program? Please help me. ...

First look at the prompt program. Maybe there is something wrong with this program. If it is unloading and reloading. If a boot prompt appears, you can delete the boot of the program. If you can't find out or prompt that it is not a program but a system process, you can recall what program, software, plug-in, patch or driver you downloaded before this failure. If you remember, please try to uninstall them first.

If you can't find it, it is recommended to kill the Trojan horse first and try to repair the system.

I suggest you download the windows cleaning assistant to clean up the system and kill Trojans.

1. Please use the system that comes with the system to recover until there is no such fault (or use recovery software to recover the system. If you cannot enter the system, press F8 to enter the safe mode to restore the system).

2. If the fault remains, use the system disk to repair it, open the command prompt and enter SFC/SCANNOW(SFC and/) to insert it into the original system disk repair system, and the system will automatically compare and repair it.

3. If the fault still exists, set the optical drive in the BIOS as the first boot device, insert the original system installation disk, and press the R key to select "Repair Installation".

4. If the fault still exists, it is recommended to reinstall the operating system.

Use the system restore method that comes with the system:

System Restore: Start/Programs/Accessories/System Tools/System Restore, click Restore my computer to an earlier time, and then click Next. You will see that the date page has a dark date, which is the restore point. After it is selected, click Next to restore the system (Win7), and then select the device and security sub-options in the control panel.