1. The operating system file is corrupted.
2.MBR table is damaged.
3. The hard disk data cable is loose.
4. The hard disk is broken.
Solution:
1. Reinstall operating system. Refer to the system to download the basic installation tutorial Xiao Zaibase. /JC/
2. Boot with U disk or CD, enter PE system, and repair MBR table with partition slot software (some software is called repair boot).
3. Check the data cable and power cable of the hard disk, plug the connector tightly, and replace it with a new one if the cable is broken.
4. If the BIOS can recognize the hard disk, please try to recharge the system. If it cannot be charged, try repartitioning the hard disk. If you can't partition, try low-level formatting the hard disk. The hard disk is not recognized in BIOS, so we have to replace it with a new hard disk.
The computer boot shows that there is a long line of English behind the current bios. There are no problems that need to be solved in detail. In this case, the hard disk cannot be detected. Try to change the hard disk for the interview. If it is not the cable problem of the hard disk, check whether the power supply of your hard disk is connected properly.
Or you can go into the BIOS of the motherboard and see if the hard disk is detected.
In addition, the hard disk is confirmed to be ok. See if you turned off the hard disk option by mistake in the BIOS.
Hello, how to solve the windows Startup Manager when the computer is turned on? Windows means that drive a was not found. The possible reason is the recent hardware or software changes. It can be solved in the following ways:
1, press and hold the power button of the computer to shut it down forcibly;
2. Press the power button to turn on the computer. When you see the LOGO of the computer motherboard, press the corresponding Bios to start the shortcut key (each motherboard is different, please check the shortcut key to enter the BIOS yourself) to enter the BIOS;
3. Find the quick promoter menu under the startup menu, and then close and restart it to enter the Windows system normally.
The computer turns on and shows re. This is the system scanning your hard disk, and it may be your own operation. If you turn off the power illegally or press the power directly, the computer will check your hardware, including your hard disk, when it is turned on.
Also, there is something wrong with your computer hard disk. I suggest you use the disk scanning tool that comes with your computer to scan and repair. If it is serious, use the following software to repair it (if you don't scan it next time after this scan, it is a normal scan. If you always scan the hard disk when you turn it on, please see below and try to repair the disk in the following ways).
2) If there is no illegal shutdown and there is no problem with the hard disk, you can use the following methods to remove the system scanning hard disk when booting or scanning:
Click "Start/Execute", enter "regedit" and press Enter to open the Registry Editor. Select the subitem "HKEY _ local _ machine \ system \ current control set \ control \ session manager" in turn, then find the key item "BootExecute" in the right window, clear its numerical data and restart (select the file to be backed up before clearing, so as to restore the backup).
The system's own disk repair method (if there is a problem with the disk, use this method to repair it):
The specific steps are as follows (taking Windows XP as an example): Select the drive letter in my computer and click the right mouse button. In the pop-up drive properties window, select Tools → Start Check, and select Automatically repair file system errors and scan and recover bad sectors, and then click Start. The scanning time varies depending on the disk capacity and scanning options.
Bad hard disk will cause the computer system files to be damaged or lost, and the computer can't start or stop. Hard disk bad track can be repaired by NDD disk tool or disk scan.
If the problem cannot be solved, please restore the system or charge the system. If not, format the hard disk, repartition the slot, and charge the operating system. If it doesn't work, change the hard disk.
If the computer doesn't open, it will display a string of English. How to solve it? According to your description, your computer system is out of order. Now that the system has collapsed, it can only be solved by the recharge system.
The computer system crashed. There are two ways to charge the system.
The top-up system will only change the system in computer disk C, such as files and things in computer disks D, E and F.
The first is the CD-ROM installation system. Suitable for knowing the computer BIOS settings very well. Find and enter the option with the word "BIOS" in the BIOS interface. 1. "advanced BIOS features".
2. After entering "Advanced BIOS Function", use "First" and "First Boot Device" to find the first boot device option.
3. In the "First Boot Device" option, select "CDROM" and press Enter. After setting all the configurations, press the "F 10" key on the keyboard to save and exit, then the computer will restart itself, and the rest is to automatically install the system.
These are the steps to set the BIOS startup. The BIOS settings of each computer are different, so you can refer to them. Once you learn it, you can install the system on a CD.
The second is the U disk installation system. To install the system with a USB flash drive, you need to first make the USB flash drive into a startup disk, then download the system from the Internet, and copy the decompressed system to the USB flash drive with GHO.
1. To install the system, you can go to the system download base and stay at the base in summer. /WIN7/dngs/360 1。 To download the latest operating system of Win 7, it is free, and there is a detailed graphic installation tutorial on it, which can be used as a reference when installing the system.
2. After reading the tutorial of making USB flash drive, you will use the disk mounting system. Go to the computer store: u. diannaodian ./ Jiaocheng /index. Learn how to install the system.
Suitable for knowing the computer BIOS settings very well. Find and enter the option with the word "BIOS" in the BIOS interface. 1. "advanced BIOS features".
3. After entering "Advanced BIOS Function", use "First" and "First Boot Device" to find the first boot device option.
4. In the "First Boot Device" option, select "U Disk" and press Enter. After setting all the configurations, press the "F 10" key on the keyboard to save and exit, then the computer will restart itself, and the rest is to automatically install the system.
These are the steps to set the BIOS startup. The BIOS settings of each computer are different, so you can refer to them. Once you learn it, you can install the system with a USB flash drive.
Restarting the computer always displays a string of English, but it just won't open. What is the reason? This is caused by computer hard disk inspection, and the specific solutions are as follows:
According to the diagnosis and treatment of fault phenomena, it is easy to judge the fault by knowing the process of computer startup. From simplicity to copying, learn to observe before thinking, which is also the most basic principle to solve computer faults (how to set startup items).
Phenomenon 1: The system can't start at all, the power indicator doesn't light up, and the sound of the cooling fan can't be heard. At this time, first of all, check whether all the wires are connected properly and whether the power cord is loose. If not, it can basically be considered as a power outage. Check: whether the power cord and socket are powered on, whether the motherboard power plug is connected properly, and whether UPS is supplying power normally. The simplest way is to replace the power supply, but it is impossible for ordinary users to have spare parts such as power supply at home. At this time, you can try the following methods (note: be careful): first connect the hard disk, CPU fan or CDROM. Then use a wire to connect the power plug of ATX motherboard to two pins (one side of the plug is facing itself, the upper pin is the fourth from the left and the lower pin is the third from the right, and the direction must be correct), and then turn on the switch of ATX power supply. If the power supply fan rotates, the power supply is normal, otherwise the power supply is damaged. If there is nothing wrong with the power supply, directly short the jumper of the power switch on the motherboard. If it is normal, the power switch on the chassis panel is damaged.
Phenomenon 2: The power indicator lights up and the fan turns, but the monitor has no obvious system action. If this is a computer that has been used for a long time, it may be caused by loose memory chips or too much dust. You can remove the memory stick, clean it and put it back on, and the general problem can be solved. If it appears on a newly assembled computer, first check whether the CPU is plugged in or replaced, and the CPU of the computer being used is rarely damaged (except for man-made damage), and it usually smells burnt when damaged. If the BIOS has just been upgraded or attacked by CIH virus, it is necessary to consider the damage of the BIOS (the BIOS is also inexplicably damaged). The method of repairing the BIOS has been introduced in many magazines, so I will not go into details; After confirming that there is nothing wrong with CPU and BIOS, we should consider the problem of CMOS setting. This failure can also occur if the CPU's main frequency is set incorrectly. The solution is to clear CMOS information, which is CMOS discharge. Generally, there are CMOS discharge jumpers on the motherboard. If you can't find this jumper, you can remove the CMOS battery and discharge it for no less than 5 minutes, then restore the jumper to its original state or reinstall the battery. If the CPU, BIOS and CMOS are all fine, we should also consider the power supply: the PC power supply has a special output signal, which is called the power good (PG) signal. If the low-level duration of PG signal is not enough or there is no low-level duration, the PC will not be able to start the 2500 yuan computer configuration list. If the PG signal is always low, the PC system is always in the reset state. At this time, the PC also appears black screen, mute and other downtime phenomena. However, this requires professional maintenance tools and certain maintenance experience, and it is recommended to adopt the replacement method; If there is nothing wrong with the power supply, it is necessary to check whether there is a short circuit to ensure that the surface of the motherboard is not in contact with metal (especially the mounting fixing point of the chassis). Take the motherboard and power supply out of the chassis and put them on the surface of the insulator. If it can be started, the motherboard has a short circuit phenomenon; If you still can't start, then you should consider the motherboard problem. The failure of the motherboard is complicated, so it can be confirmed by replacement, and then the motherboard can be replaced.
Phenomenon 3: When the power indicator light is on, the system can be started, but when the system is initialized, the system stops and a beep can be heard (no video): the fault location can be judged according to the peak beep. Id_page/ Award BIOS 1 short tone: indicates that the system is started normally. Indicates that there is nothing wrong with the machine. 2 short tone: it means that CMOS is set incorrectly, and the incorrect option is reset.
1 long, 1 short: it means there is something wrong with the memory or motherboard. Try another memory stick.
1 long, 2 short: indicates that there is an error in the monitor or graphics card. Check whether the plug of the video card and monitor is in good contact or replace it to determine whether the video card and monitor are damaged. 1 long, 3 short: It means that there is something wrong with the keyboard controller, so check the motherboard.
1 length 9 short: it means that the motherboard Flash RAM and EPROM are wrong or the BIOS is damaged, so replace the Flash RAM. Repeated short sound: It means there is something wrong with the motherboard power supply. Uninterrupted long tone: indicates that the system has detected a problem with the memory stick. Please reinstall the memory stick or replace it with a new one, and then try again. AMI BIOS 1 short: indicates that the memory refresh failed. Replace the memory stick.
2 Short: indicates that the memory ECC is checking for errors. In CMOS, set the memory ECC check option to disable or replace the memory. 3 Short: indicates that the system basic memory check failed. Change your memory.
4 Short: indicates that the system clock is wrong. Replace the wafer or CMOS battery. 5 short: indicates that there is an error in the CPU. Check whether the CPU is plugged in. 6 Short: Indicates keyboard controller error. The motherboard needs to be checked.
7 Short: indicates that the real mode of the system is wrong, and it is impossible to switch to the protection mode. 8 Short: Indicates a memory error. There is a problem with the display memory. Try replacing the video card. Brief: BIOS chip check and error description.
1 long, 3 short: indicates a memory error. Memory is damaged. Replace the memory. 1 is long, and 8 is short: indicating that a test error is displayed. The data cable of the monitor is not plugged in properly or the video card is not plugged in firmly.
The computer display startup manager cannot be opened. The computer system startup error means that the first sata hdd is selected in that place in your picture, and the system is set as the default hard disk startup, so that it can be started normally.
If you can't boot, it is likely that the system startup file is damaged.
There are also solutions:
First, make your own USB flash drive and pe to repair the computer.
The second is to reinstall the system directly (all the previous data is overwritten, that is, the slots are repartitioned)
Insert the prepared PEu disk, and then go to this interface in the figure, select u *** to start, and then press F 10, select y to exit and restart.
Here's a way:
Set the startup USB flash drive as the first startup item, then enter the pocket PEwin2003 interface and open the Start-Program-System Maintenance -—windows startup tool in turn. After opening the windows startup tool, click the "1 automatic repair" option.
The computer boot shows that the yellow light can't be turned on. What about your computer? The best advice is to take it to the after-sales office for your maintenance.
The problem should not be very big. There are various reasons.
A long list of words can't appear after the computer is turned on. The computer won't open. Solution:
1. If you don't know where the specific problem is and there is no alarm sound, consider the simplest problem first.
For example, the memory stick is loose, or the motherboard cannot recognize the memory because of gold finger oxidation. At this time, unplug the memory module, wipe it clean and then plug it in.
This usually solves the problem when you start the computer.
2. If it doesn't work, if you have a discrete graphics card, wipe your golden finger after unplugging it. If the motherboard has an integrated vga interface, you can use the motherboard's graphics card interface to plug in the graphics card after judging the problem.
3. If the memory display card can't solve the problem, don't panic. You can remove the S battery from the motherboard, turn off the power and install it in a few minutes.
Sometimes, due to the change of hardware, the S configuration changes, which may also cause the machine to fail to start.
4. If all else fails, consider the motherboard or cpu.
Cpu problem first check whether the power supply is normal.
5. When the computer is turned on, you can't enter the system. There are two situations: there is a hardware problem in the self-test, and the system or driver problem is whether the self-test can pass the desktop.
1. Self-check can pass, but it cannot enter the desktop. This is an operating system or driver problem:
Why can't the computer enter the desktop normally or the blue screen stops after repeated restarts?
In the case of virus removal, it is usually because the GHOST version or other modified versions of the operating system are installed, and a large number of drivers that are not suitable for your hardware devices are integrated in advance, resulting in the system being unable to correctly identify and load the necessary hardware devices.
This error can be corrected by downloading and installing the original operating system and installing all drivers certified by Microsoft WHQL.
If you don't want to recharge, you can try to turn on F8 to enter the safe mode to uninstall the incompatible drivers of hardware devices (that is, right-click the device in the device manager) > Properties > Presence > Digital Signature Program >: drivers of Microsoft Windows hardware compatible publishers), automatically identify the hardware devices after startup, reinstall the downloaded drivers (WHQL) that have passed the Microsoft digital signature authentication, and then restart the computer again to see if there are any improvements.
Then there is software with duplicate functions in the system, causing conflicts (for example, two or more software killers and firewalls are installed, and advertisements are blocked).
If it is confirmed that it is not a system or software problem, you need to test the hardware in the following order: first, memory is the most likely, then CPU, then hard disk, and finally graphics card. There will be basically no blue screen on the motherboard.
In addition, check whether the machine is overheated due to poor heat dissipation (if it is, it is necessary to install a stronger radiator, repaint the thermal grease and replace the high-power fan).
Check whether the top of the motherboard capacitor is convex (if convex, it must be replaced immediately).
It also depends on whether the output voltage is unstable due to insufficient power supply of the chassis (if so, it must be replaced immediately).
If the power-on self-test fails and no beep is heard, it must be a hardware fault, and the alarm sound of a small horn (buzzer) is needed for preliminary judgment to narrow down the scope of hardware fault. Please refer to your motherboard manual for the specific meaning of power-on alarm sound.
2. If the self-check fails, it must be a hardware failure:
What should I do if I don't hear the "ticking" sound after starting the computer?
After the computer started, the self-test failed. If you don't hear the dripping sound, it must be a hardware failure.
Exclusion inspection requires the following aspects:
1. The system time can't be dBIOSplayed and stored correctly, which is caused by insufficient battery power on the motherboard. This kind of fault can be solved by replacing the new motherboard battery and pressing DEL key to reset the correct system time.
2. Check whether the motherboard capacitor is bulging or leaking. If so, please go to a professional computer repair place to replace the motherboard capacitor.
3. Unplug the memory stick, wipe the golden finger with an eraser and plug it back in.
4. Reconnect all hardware and connecting wires firmly to avoid virtual connection.
5. Start the fan once with the chassis open to see if it works normally. If not, it needs to be replaced.
6. Check whether the power supply of the chassis is insufficient, and replace it if there is a replacement power supply at hand.
7. Whether there is a hard disk failure will lead to bad track. Check the BIOS to see if the hard disk can be recognized.
There is no signal on the display, so it is important to check the connection of the display part. The graphics card or monitor itself may be a black screen or a flower screen problem.
9. According to the alarm sound of the small horn (buzzer) of the boot chassis combined with your specific BIOS preliminary judgment, so as to narrow the scope of the problem. Please refer to your motherboard manual for the specific meaning of alarm sound.
10. That's all I can think of for the time being. Other parts are also checked step by step by substitution method or minimum load method.
The computer won't open. What if I open a string of English?
It depends on what English it is, but most of the problems are that the computer hard disk is damaged or the system in the computer hard disk is incomplete, so it can't be turned on.