Computer fails to access system class troubleshooting methods

Hardware issues

Phenomenon: The system can start, there is video, failure prompts, at this time can be based on the tips to determine the fault site. The following are some common troubleshooting tips:

First, the hint "CMOS Battery State Low"
Reason: CMOS parameters are lost, sometimes can be started, using a period of time after the crash, this phenomenon is mainly due to the lack of CMOS power supply. For different CMOS power supply methods, take different measures:
1. Welding Battery: Soldering a new battery with soldering iron; 2. button-Type battery: direct replacement; 3. Chip type: Replace this chip, preferably with the same model chip replacement.
If the replacement of the battery after a long time and the same phenomenon, it is likely that the motherboard leakage, can check the motherboard on the diode or capacitor is damaged, but also jumper use of external batteries, but these need to have a certain base of hardware maintenance to complete.

Second, the hint "CMOS Checksum failure" CMOS in the BIOS check and read error; Hint "CMOS system Option not set", CMOS systems not set, hint "CMOS Display Type mismatch", CMO The setting of the display type in S is inconsistent with the actual measurement; prompts the "CMOS Memory Size mismatch", the main memory on the motherboard is not the same as that in the CMOS; prompts "CMOS time & date not set". All of these need to be reset to the CMOS.

Third, the prompt "keyboard Interface Error" After the crash reason: the motherboard on the keyboard interface can not be used, unplug the keyboard, reinsert after the normal boot system, the use of a period of time after the keyboard no response, this phenomenon is mainly a number of times to unplug the keyboard to cause the motherboard keyboard interface loose, Remove the motherboard with a soldering iron can be, or a live unplugged keyboard, causing the motherboard on a security block (marked on the motherboard for FN), replaced by a 1 ohms/0.5 watts of resistance can be.

Iv. self-test process interrupted at Xxxk cache This indicates that the cache on the motherboard is damaged and can be excluded by setting the "External cache" item to "Disable" in the CMOS settings. Similarly, when the Self-Test board part is interrupted, you can consider the part damaged, the solution can generally be shielded in the CMOS, if it is not possible to shield the part, the motherboard should be replaced

Software Problems

Step one, if your award BIOS6.0, restart your computer, and then press Del to enter bios6.0, go to the BIOS setup interface and find advanced BIOS Features (Advanced BIOS parameter settings). Then hit enter to the next page Advanced Bios features interface, then select "First Boot Device", on his right side of the Hod-o, select CDROM boot. Then press the EXIT key ESC to save its settings and then exit. Now the computer is restarted by pressing the optical drive to start the computer.
Of course, if your BIOS is the AMI BIOS 8.0 settings, the same boot press the DEL key into the BIOS of the operating interface, first find the menu bar on the Boot, enter into the next interface, and then select "" Boot Device Priority, select continue to hit Enter, Then enter the "1st Boot Device" interface, and then press ENTER to the next options interface, with the arrow keys to select "Cd/dvd:3s-ph ..." (Optical drive boot), the last return, and then exit to save.

Step two, and then insert the system CD-ROM such as XP system installation CD into the optical drive, and then reboot the computer, see the screen appears CD ... , press a key under the keyboard at will, and then the system starts with a light drive.

Step three, the XP system installation interface appears, and then the system is installed automatically, and some CD appears in the Windows XP installation protocol, Windows XP Professional end User Installation protocol interface, press the "F8" button, agreed to accept the license agreement. If Windows XP is corrupted in the process, select the WinXP installation you want to repair.
If the above method does not work, then check whether the computer can enter the PE safe mode, you can enter into the PE mode to copy the important files, and then the system to reload it.

Boot failed to boot normally to Windows desktop

1. Power on the upper left corner of the cursor flashing, unable to boot into the system, this problem may cause.

(1) Due to the impact of peripherals, such as U disk, mobile hard disk, for this situation, please unplug the peripheral test, or the power-on click F12, select from the hard disk boot to start the hard drive directly.

(2) The problem with the boot area, causing the failure to start.

(3) Operating system problems caused

2. Start to see the Windows screen, automatic restart.

(1) Click F8, select the "last issue of the correct configuration" option test, whether normal;

(2) If the last time the correct configuration is invalid, you can restart again, click F8, select the "Safe Mode" option to start;

(3) If Safe mode can be started normally, confirm that the problem occurs after updating the patch, you can uninstall the installation of the patch test, uninstall Method: Open the Control Panel---"program"---"Programs and Features"---"View installed Updates";

(4) Through the installation time, confirm the latest installation of the update, delete this update test.

(5) To disable the Power-on startup item test to see if the startup item problem interferes.

3. The blue screen appears during the boot process, the handling of this problem can be manipulated by reference to 3

Special note: For blue screen issues, such as blue screen code for the 0x0000007b screen error, please check the hard drive mode is correct.

4. The boot has the display, but has the self-test error, both appears the black background white letter English prompt, cannot enter the system normally. You can refer to a document numbered 088646 for fault diagnosis.