Computer System is not the absolute device. There are many issues computer has. Some of them are very easy to rectify but there are many issues which needs some troubleshooting steps to resolve. I have tried and list out some troubleshooting steps which might resolve the issue. Give is the list of faults/errors and methods are given to rectify those errors. I hope you will find this article very useful.
Error 1 :- SET DEAD (No indicators glowing):
Steps to perform:-
Check power supply cable
ON/OFF switch
Power supply
Power supply output units
Explanation:- Check power supply input cable condition and ON/OFF switch position. Cable may be internally open or ON/OFF switch may be defective. If the input path (cable and switch) is normal check power supply condition. The power supply inside may be effective. Check power supply line filters, rectifier unit, SMPS output transistor ,transformer and input/output voltage fuse condition.
Error 2 :- NO DRIVE DETECTION(HDD)
Steps to perform:-
Check Hard disk,
Cable,
Supply and I/O cards condition,
Explanation:- Check hard disk condition, Hard disk may be internally fai¬lure or hard disk primary slave jumpers may be misplaced, if the jumpers and hard disk condition is normal check hard disk supply. The hard disk supply may be disconnected or supply may be bsent. If the supply is normal check hard disk BUS cable continuity and condition. Cable may be internally open or cable connection may be reverse posi¬tion, if the cable condition and connection is normal check ID card condition, ID card may be defective or ID card Jumpers may be misplaced. Check and replace ID card. If the ID card Built-in mother board (PCI mother board) check CMOS setup, ID card address. If the address is normal, check ID card connectors. If the connectors, address and jumpers condition is normal insert new ID card in I/O port.
Error 3 :- NO COMPORTS WORKING
Steps to perform:-
Check comport connections,
Comport jumpers,
ID card condition.
Explanation:- Check comport connections, the comport connections may be in reverse or comport address may be defective in CMOS setup. If the address and connections is normal check I/O card condition, I/O card may be defective or I/o card jumpers may be defective. If the I/O card is built-in motherboard, check comport address and comport connections. If the address and connections is normal insert new I/O card in I/o port and disable on-board comports in CMOS setup.
Error 4 :- NO LPT WORKING
Steps to perform:-
Check LPT port cable,
LPT port address,
BUS cable,
I/O card condition.
Explanation:- Check LPT port cable continuity and condition, port cable may be internally failure or cable may be in reverse, if the port cable is normal check LPT address in CMOS setup. The address may be defective correct the address. If the address and cable is normal, check I/O card condition and I/O card LPT jumper setting. I/O card LPT jumper setting may be misplaced or I/O card may be defective, check and replace I/O card.
Error 5 :- SERIAL AND PARALLEL PORTS DEAD
Steps to perform:-
Check I/O card,
I/O card jumpers,
I/O card condition.
Explanation:- Check ports connection, port address and port jumpers settings, port address jumper settings may be defective or port cabling may be defective. If the jumpers and cabling is normal check and replace ID card.
Error 6 :- NO LIGHTNING (display information) BUT BEEPING SOUND IS NORMAL
Steps to perform:-
Check monitor,
Monitor supply cable,
Video display card,
Display card condition.
Explanation:- Check monitor indicator is glowing or not, if it is not glowing check monitor ON/OFF switch, monitor supply cable and monitor power supply path. If the indicator is glowing check video display card connection and condition. The display card connection may be defective or display cable may be internally failure. If the display cable and connection is normal, check display card condition. The display card may be loose contact or card may be defective or the video display card memory may be failure (VRAM).
Error 7 :- FDD NOT WORKING
Steps to perform:-
Check floppy drive,
Cable, Supply,
I/O card condition.
Explanation:- Check floppy disk condition, Floppy disk may be inter¬nally failure, Check floppy disk supply. The floppy disk supply may be disconnected or supply may be absent. If the supply is normal check floppy disk BUS cable continuity and condition. Cable may be internally open or cable connection may be reverse position, if the cable condition and connection is normal check ID card condition, ID card may be defective or ID card Jumpers may be misplaced. Check and replace ID card. If the ID card Built-in mother board (PCI mother board) check CMOS setup, ID card address. If the address is normal, check ID card connectors. If the connectors, address and jumpers condition is normal insert new ID card in I/O port.
Error 8 :- NO CD-ROM DETECTION
Steps to perform:-
Check CD-ROM supply,
CD-ROM condition,
BUS cable,
CD-ROM driver software.
Explanation:- Check CD-ROM supply condition and cable connection, the cable connection may be in reverse or the cable connector may be internally failure. If the cable and supply path is normal, check CD-ROM condition. CD-ROM may be internally failure. If the CD-ROM path is normal, check CD-ROM drivers software. The driver software may be improper installation or CD-ROM accessible MSCDEX.EXE file may be corrupted or AUTOEXEC.BAT and CONFIG.SYS files may be defected.
Error 9 :- MEMORY IMPROPER CHECKING
Steps to perform:-
Check memory,
CMOS setup
Explanation:- Check memory condition and socket connections. The socket connections may be defective or memory type may be mis¬matched. If the RAM and socket Connections is normal check CMOS setup memory parity check condition.
Issue 10 :- AUTOMATIC REBOOTING
Steps to perform:-
Check reset switch,
Reset jumper,
System file condition,
System files may be affected with virus.
Explanation:- Check system reset switch, the reset switch may be loose contact or switch may beinternally affective. If the switch connections and condition is normal, check reset switch jumper in mother board. The reset switch jumper may be in ON condition. Change the jumper connection from reset mode to normal mode. If the reset jumper condition is normal check the system files and software files. In the files may be defective. Scan all files (including system files) by using any virus scanner software.
Issue 11 :- SYSTEM HANGING
Steps to perform:-
Check system bootable files,
CMOS setup.
Mother board,
CPU heat shrink fan.
Explanation:- Check system files condition, the system files may be affected with virus or IO.SYS or MSDOS.SYS files may be corrupt¬ed. If the both system files is normal check COMMAND.COM file area. The COMMAND.COM area may be modified. Scan all files by using any virus scanner software. If the system files and COMMAND.COM is normal, check CPU, Heat shrink fan. The heat shrink fan may not be working.
Issue 12 :- SYSTEM SPEED BECOME A LOW
Steps to perform:-
Check system bootable files,
CMOS setup,
Mother board,
CPU heat shrink fan.
Explanation:- Check system files condition, the system files may be affected with virus, IO.SYS or MSDOS.SYS files may be corrupt¬ed. If the both system files is normal check COMMAND.COM file area. The COMMAND.COM area may be modified, scan all files and COMMAND.COM area is normal, check CPU, heat shrink fan, heat shrink fan is not working.
Issue 13 :- FLICKERING INFORMATION
Steps to perform:-
Check monitor connection,
Supply cable,
Monitor control card (display card).
Explanation:- Check monitor signal cable, the signal may be defective or monitor brightness control may be loose contact. If the monitor and cable condition is normal check input supply cable. The input supply cable may be loose contact. Check and replace supply cable. If the supply path is normal check video display card connections, check video display card connected I/O slot. The connected I/O slot may be loose connection or the I/O card may be defective. Check and replace display card. Before replacing the display card, check VRAM condition.
Issue 14 :- SYSTEM NOT BOOTING (system files and COM files is normal condition)
Steps to perform:-
Check hard disk partition tables,
CMOS setup,
CMOS setup boot sequence.
Explanation:- Check CMOS setup boot sequence condition and hard disk mode. If the mode and sequence is normal check hard disk condition. The hard disk may be affected with virus. Boot the system from externally (through fresh bootable floppy). After booting the system scan the hard disk and hard disk partition tables by using any virus scanner, the partition tables may be affected with virus. After scanning the hard disk and partition tables, restart the system by using power ON/OFF switch.
Issue 15 :- FDISK COMMAND NOT WORKING
Steps to perform:-
Check hard disk,
Fdisk (Format Disk) command, (using any format disk usage)
Hard disk partition table condition.
Explanation:- Before using FDISK command scan the hard disk by using any virus scanner, after completing the scanning check hard disk partition by using FDISK command, after scanning also FDISK command is not working check FDISK command and hard disk mode in CMOS setup.
Issue 16 :- FLOPPIES NOT READING BUT NO FDD ERROR
Steps to perform:-
Check floppy disk condition,
CMOS setup FDD reading setup.
Explanation:- Check floppy drive condition, the floppy drive reading head motor may be failure or reading head may be defec¬tive. If the reading head motor and head is normal, check floppy drive drum motor. The drum motor may be not rotating. Check and replace floppy disk drive. Before replacing the floppy drive, check CMOS setup floppy reading address.
Issue 17 :- SET DEAD BUT ALL INDICATORS GLOWING
Steps to perform:-
Check mother board supply,
CPU condition,
Pulse goods signals (P.G signals).
Explanation:- Check power supply output P.G signals and mother board input supply connections ( +5v, 12v, -5v, -12v, P.G sig¬nals and ground). In this input connections any one supply connection may be absent. If the supply condition is normal check CPU and BUS control IC's. The CPU may be internally fai¬lure. Check and replace CPU. Before replacing the CPU check BUS control IC's and memory IC's.
I know the issues or errors are not the complete error list. There are many errors which are not addressed in this article. If your computer showing any error or if you are experiencing any issue which is not addressed in this article then please contacts me. I will do my best to help you.
Thanks,
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