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Trubleshoot Motherboard what is mother board prob and how can find n fix them....

Answers :

More than 70% of all computer problems are related to cabling and connections. Ensure all cables are connected and connected firmly. IDE and floppy ribbon cables and power cables can often go loose. Ensure microprocessor, memory modules, and adapters such as video card are inserted correctly and didn't "pop-up" due to vibration.
System has no power at all. Power light does not illuminate, fan inside the power supply does not turn on, and indicator light on keyboard does not turn on. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Power cable is unplugged.\011Visually inspect power cable.\011Make sure power cable is securely plugged in.
Defective power cable.\011Visual inspection, try another cable.\011Replace cable.
Power supply failure.\011Power cable and wall socket are OK, but system is still dead.\011Contact technical support
Faulty wall outlet;circuit breaker or fuse blown.\011Plug device into socket know to work and test.\011Use different socket, repair outlet, reset circuit breaker or replace fuse.

System inoperative. Keyboard lights are on, power indicator lights are lit, and hard drive is spinning. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Expansion card is partially dislodged from expansion slot on the motherboard.\011Turn off computer. Take cover off system unit.
Check all expansion cards to ensure they are securely seated in slots.\011Using even pressure on both ends of the expansion card, press down firmly on expansion card.
Defective floppy disk drive or tape drive.\011Turn system off.
Disconnect the cables from one of the floppy drives. Turn on the system, check to see if the keyboard operates normally. Repeat until you have located defective unit.\011Contact Technical Support.
Defective expansion card.\011Turn computer off.
Remove an expansion card.\011Make sure expansion card is secure in expansion socket.

System does not boot from hard disk drive, can be booted from floppy disk drive. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Connector between hard drive and system board unplugged.\011When attempting to run the FDISK utility described in the HARD DISK section of the manual you get a message, INVALID DRIVE SPECIFICATION.\011Check cable running form disk to disk controller on the board. Make sure both ends are securely plugged in; check the drive type in the Standard CMOS Setup (in your motherboard manual).
Damaged Hard Disk or Disk Controller.\011Format hard disk; if unable to do so, the hard disk may be defective.\011Contact Technical Support.
Hard Disk directory or FAT is scrambled.\011Run the FDISK program, format the hard drive(See HARD DRIVE section of manual). Copy your backup data back onto hard drive.\011Backing up the hard drive is extremely important. All Hard Disks are capable of breaking down at any time.

System only boots from Floppy Disk. Hard Disk can be read and applications can be used, but booting from Hard Disk is impossible. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Hard Disk boot program has been destroyed.\011A number of causes could be behind this.\011Back up data and applications files.
Reformat the Hard Drive as described in the Hard Drive section of the manual. Re-install applications and data using backup disks.

Error message reading "SECTOR NOT FOUND" or other error messages indication certain data is not allowed to be retrieved. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
A number of causes could be behind this.\011Use a file by file backup instead of an image backup to backup the Hard Disk.\011Back up any salvageable data. Then do a low level format, partition, and high level format of the hard drive( see Hard Disk section of your manual for instructions). Re-install all saved data when completed.

Disk formatted on IBM PS/2 will not operate with this system. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
The IBM PS/2 uses a different format than other computers.\011IBM PS/2 disk format will not work in an AT type computer.\011Format disk in the AT type computer insert disk into the IBM PS/2 and copy the files you wish.

After install an expansion card (network card, tape drive card, etc.) the system no longer works properly. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
No power to monitor.\011All or part of the system may be inoperable. The new card may work but a mouse or COM port may not work.\011Change the interrupt or RAM address on the new expansion card. See the documentation that came with the new card in order to change pin settings. many expansion devices come with proprietary software that will assist you in doing this.

Screen message says "Invalid Configuration" or "CMOS Failure." PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Incorrect information entered into the configuration (setup) program.\011Check the configuration program. Replace any incorrect information.\011Review system's equipment. Make sure correct information is in setup.

No power to monitor.\011Power connectors may be loose or not plugged in.\011Check the power connectors to monitor and to system. Make sure monitor is connected to display card, change I/O address on network card if applicable.
Monitor not connected to computer.\011 \011See instructions above.
Network card I/O address conflict.\011 \011See instructions above.

System does not boot from hard disk drive, can be booted from floppy disk drive. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Connector between hard drive and system board unplugged.\011When attempting to run the FDISK utility described in the HARD DISK section of the manual you get a message, INVALID DRIVE SPECIFICATION.\011Check cable running form disk to disk controller on the board. Make sure both ends are securely plugged in; check the drive type in the Standard CMOS Setup (in your

Memory problem, display card jumpers not set correctly.\011 \011Reboot computer. Re-install memory, make sure that all memory modules are installed in correct sockets. Check jumper and switch settings on display card. See display card section for information of settings.
Computer virus.\011 \011Use anti-virus programs (McAfee/PC-cillin, E-port, etc) to detect and clean viruses.

Screen goes blank periodically. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Screen saver is enabled.\011 \011Disable screen saver.

Keyboard is disconnected.\011 \011Reconnect keyboard. Check keys again, if no improvement, replace keyboard.

Faulty Monitor.\011 \011If possible, connect monitor to another system. If no color, replace monitor.
CMOS incorrectly set up.\011 \011Call technical support.

Floppy drive lights stays on. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Floppy Drive cable not connected correctly.\011 \011Reconnect floppy cable making sure PIN1 on the Floppy Drive corresponds with PIN1 on floppy cable connector.

Bad floppy disk.\011 \011Try new floppy disk.
Floppy disk not formatted\011 \011Format floppy disk(type ENTER)

SETUP program does not have correct information.\011 \011Boot from drive A: using DOS system disk. Input correct information to SETUP program.
Hard Drive cable not connected properly.\011 \011Check Hard drive cable.

Cannot boot system after installing second hard drive. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Master/Slave jumpers not set correctly.\011 \011Set master /Slave jumpers correctly.
Hard Drives not compatible / different manufacturers.\011 \011Run SETUP program and select correct drive types. Call drive manufactures for compatibility with other drives.

Missing operating system on hard drive. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
CMOS setup has been changed.\011 \011Run setup and select correct drive type.

Certain keys do not function. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Keys jammed or defective.\011 \011Replace keyboard.

Keyboard is locked, no keys function. PROBABLE CAUSE\011DIAGNOSIS\011SOLUTION
Keyboard is locked.\011 \011Unlock keyboard

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