The computer can t install the system, and the hard disk can t be found

1.Dust the motherboard, then plug in the hard disk, and pay attention to the IDE interface to be plugged in firmly.

2.Remove devices with IDE interfaces, such as optical drives and floppy drives.

3.Go to CMOS and check if the hard disk has been found.

If you can't find it, you can preliminarily judge two possibilities: A motherboard has a MOS tube burned out.

bThe hard disk is damaged.

As you said, your own hard drive hangs on your friend's machine with the same blue screen. I think it's more likely that the motherboard is damaged.

The hard disk working mode has not changed, and of course XP can't change win7 into CMOS

Change the working mode of the hard disk.

Enter CMOS

The second or third item.

Will. sata

Hard Disk Options.

Change the IDE to:

ahci or.

Compatible mode.

The low grid tool from the DOS can be used to partition the hard disk from new. You can solve the problem.

I want to install the win7 system,Installed with a USB flash drive,After installation, it will be a blue screen when it is turned on,Can't start,Later, I used the XP system disk to change back to XP,But the system can't be installed,A:...... is displayed when installingI forgot what it was), I entered the PE system, in my computer, I found that there was no C disk, I didn't understand it at first, I used the system.

The laptop has a hidden partition, or the C drive is hidden, which is done to protect the system.

The specific steps are as follows:

Start by emptying the BIOS. (It is intended to remove the system protection of the motherboard), wipe the hard disk with Eraser in MHDD, which is intended to completely remove the hidden partitions, hidden backups and hidden system partitions on the hard disk).

Then format it with a DM partition after erasing. (meant to partition according to your preference), install it with the Ghost version of XP. (Meant for quick installation).

My own XP system is a free wind drive package, and I have installed countless desktops and laptops, and so far, there has never been a situation where the driver could not be installed.

If your hard drive is SATA, you may use Ghost to block the IDE channel, otherwise you won't be able to find the hard drive, or go into the BIOS and block the IDE channel. The method is to block with ghost, use ghost version above, execute the ghost command under dos, and add the ---noide additional code. Assuming ghost is placed in the root directory of d, the command format is:

d: -noide enter.

The second way is to go to the BIOS settings, interneted peripherals --ide functionsetup--- set Onchip IDE Channel 0 or Onchip IDE Channel 1 to disabled in the page to save and exit. Both of the above methods can solve the problem that the hard drive cannot be found when ghost.

On the SATA hard drive, press F2 or Del to enter the BIOS at boot, and set the hard drive interface mode to Compatible in the Advance tab.

The hard disk cannot be found in the computer system, and the hard disk replacement is repaired.

1) The first reason: that is, the hard disk mode is different, resulting in the use of U disk reinstallation does not recognize the hard disk, because most of the hard disks of the computer are serial port hard disks, and the ordinary XP installation disk and the Ghost version of the installation CD, they do not integrate SATA control driver (or some are also integrated, but do not match the actual SATA control driver), resulting in incompatibility, and can not identify the hard disk, resulting in the inability to install the operating system or blue screen normally, so it is necessary to change the mode of the hard disk, change the AHCI to IDE mode, and the hard disk can be recognized and the system can be installed normally.

Hope it helps.

Ask how to switch.

It is necessary to partition the disk when reinstalling the system.