Why do I have to wait 2 minutes before entering the system after the DOS self test is entered?

Go to BIOS and select F for Load Defaults. key (possibly f9). Restore the default BIOS. Then press F10 to exit and reboot to see if there is still a problem.

See if the COMS battery is dead.

System self-test before the operating system boots.

You're talking about hot starts, right? CTL+ALT+DEL, which does not re-detect the CPU and memory.

XP before the Windows system is all!!

The DOS system is very small, and the operation is in the form of commands! Now you need to use the system!!

Which interface is stuck?,What is the specific prompt?,Self-test can detect the hard disk, and there is generally no problem.。

Can you enter the interface where you choose Win Dos?

If you can get here, you can be sure that the hard disk is not broken, but the operating system has crashed.

I've seen a few times that I can't get into the system, there are no important files in the computer, and the system can be used in half an hour.

Before the computer, about 15 to 20 years ago, there was no Windows at that time, and the general computer basically used DOS.

The biggest difference between Windows and DOS is that Windows is visual, and DOS is the best of both worlds.

Here's an example. You want to copy the C drive to the D drive.

Under Windows: Find the C drive, copy, find the D drive, paste it under DOS you need to type: copy C:

D: Windows visualizes these abstract **, no need to memorize commands like I did when I was a kid, even if you have never used a computer, you can generally know how to use it. It's a lot easier.

Windows is the Graphics Window.

DOS can only type on it, there is no window.

It's like "Safe Mode with Command Prompt", but only the black part (no background) will crash if you haven't touched it, for example

cd c：cd 123

The CDs are all silent, knocking one by one.

If you don't know how to use it, you don't even know that it's off**, and the mouse doesn't.

DOS is an operating system that is pure characters and does not have a control interface like XP.

To start running cmd, enter chkdsk f d:

Enter, select n, and try again.

dos command, it is better to buy a book.

Run cmd

DOS input: chkdsk

FD: Car selection N

Restart and try. dos command to buy a book.

There are many situations, sometimes many people, there is no optical drive, USB flash drive and the like.

So, various ways can be used to solve the problem.

Not necessarily with DOS

The reason is that DOS is nothing more than in the background, in fact, the front desk can also be, and the effect is the same.

The way to install the system is because some computers do not have optical drives, so they have to use a USB flash drive, or other hard disk copies

If you enter the DOS under XP, click Start, Run, Type CMD and press Enter. That is, you have entered the command prompt interface that comes with XP. It's about the same as pure DOS.

But the difference is that it's just a virtual one, not a real DOS. Because the project related to XP has already been launched. Exiting is as simple as typing exit.

You can also close the window directly.