Sunday 11 December 2011

laptop faults troubleshootin in a nutshell

Cps101 PC (personal computer) Technology Components: 1. Main (Mother) Board. 2. Hard disk. 3. RAM (read/random access memory); SD RAM, DDR RAM. 4. Sound card / Game port. 5. LAN (local area network) card. 6. Floppy disk drive. 7. CD ROM (compact disk read only memory);CD Writer, DVD, DVD Rewriter. 8. Ribbon cable / IDE cable. 9. Processor (CPU). 10. CMOS battery. 11. VGA card; 8mb, 16mb, 32mb, 128mb, 256mb. 12. Processor fan. 13. Power pack; AT, ATS. 14. Zip drive. 15. USB (Universal Serial Bus). 16. Printer port. 17. Casing. COMPONENT & PROBLEM SYPTOMS. 1. ۩ Main (Mother) Board: I. Processor fan not fanning well. II. Booting but cannot be switched off. III. No power. IV. Hanging. V. Restarting. VI. No display. VII. No processor heating. 2. ۩ Processor: Thumb Testing; Remove the fan and power from the system for about ten (10) seconds and off the system. Use your thumb to check the processor, symptom; Moderate hot or if burning is hot, fairly hot or cold  bad processor. Note: Processor is one of the last pccomponents to get bad I. system powers, not booting but can be switch off. II. No display. III. Trips off occasionally. IV. Hanging. 3.۩ Processor fan: Inspects when the system is on I. Damaging the processor. II. Hanging & restarting. III. Slowdown the system. 4. ۩ Hard disk: I. Slowdown the system. II. Restarting. III. Hanging while opening a program. IV. Formatting errors. V. Cannot accept some installation 5. ۩ RAM: I. Decreases the available ram size. II. Hanging & Restarting. III. No display with beep sound. IV. Cannot copy some installation files. V. Display lines on the screen. VI. Slowdown the system. 6. ۩ Ribbon cable / IDE cable. I. No IDE found. II. Partially see the IDE hard disk. 7. ۩ Sound card: I. No function. II. Hanging the system. III. No display. IV. No power. V. P C I errors IV. Slowdown the system. 8. ۩ V G A: I. Beep sound but the keyboard num lock will function. II. Hanging. III. Restarting the system. IV. Lines on display. V. Boot stop. 9. ۩ CD ROM: I. Hide Hard disk. II. Stop the system from booting. III. Not shown in bios. IV. Cannot read or write CD. 10. ۩ Power pack: I. Hangs system. II. Restarts system. III. No power. IV. No display or damages the main board. 11. ۩ U S B port: I. Displays unknown USB II. Hanging. III. No USB found. 12. ۩ Casing: When it is not grounded or touching; There will be: I. No display. II. No power GENERAL MOTHER BOARD TROUBLE SHOOTING a. Check the CMOS battery and reset the jumper. b. Remove the board from the casing and remove all card plugged or slotted on the board for more visit

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