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HARD DISK NOT DETECTED ERROR OR WHAT?

 HARD DISK  NOT DETECTED ERROR OR WHAT? FRIENDS TODAY I AM GOING TO TELL YOU SOMETHING ABOUT AN ERROR THAT OCCURS MOSTLY IN COMPUTERS, THAT IS HARD DISK NOT DETECTED.   SO LET’S BEGIN. THERE ARE THREE ACTION YOU NEED TO TAKE TO THIS PROBLEM SO LET’S BEGIN. STEP 1   CHECK WHETHER THE POWER CABLE AND DATA CABLE OF THE HARD DISK IS PROPERLY ATTACHED OR NOT.  YOU CAN ALSO CHANGE THE PATA AND SATA DATACABLE.   STEP2 CHECK THE SMPS (SWITCH MODE POWER SUPPLY) YELLOW AND RED WIRE VOLTAGE LEVEL.  IF THE VOLTAGE LEVEL IS IMPROPER REPLACE THE SMPS. STEP3 ATTACH THE HARD DISK TO ANOTHER MACHINE.  CHECK IF IT IS DETECTED OR NOT IF THE HARD DISK IS DETECTED IN THE SECOND MACHINE, REPAIR THE MOTHERBOARD.  IF THE HARD DISK IS NOT DETECTED IN SECOND MACHINE REPAIR OR REPLACE THE HARD DISK.

WHAT TO DO WHEN A COMPUTER FREQUENTLY RESTARTS?

  COMPUTER FREQUENTLY RESTARTS WHAT TO DO WHEN COMPUTER FREQUENTLY RESTARTS.  WHAT ARE THE REASONS FOR ITS PERFORMANCE DEGRADATION?  LET US SEE! CAUSE NO 1 CPU OVERHEAT SOLUTION --> CHECK THE CPU TEMPERATURE FROM BIOS.  IF THE CPU TEMPERATURE IS HIGH, EJECT THE CPU FAN AND CLEAN IT PROPERLY WITH COMPRESSED AIR AND BRUSH.   APPLY THE RIGHT COOLING PASTE WITH A PIECE OF CLOTH. NOW APPLY GOOD QUALITY COOLING PASTE WITH A THERMAL COMPOUND OVER THE PROCESSOR.  ATTACH THE HEAT SINK AND FAN AND CHECK THE TEMPERATURE AGAIN.  IF THE CPU FAN SPEED IS LOW AFTER CLEANING , CLEAN THE FAN WITH ISOPROPHYL ALCOHOL, DIESEL AND WHITE PETROL. NOW ATTACH THE FAN AGAIN CHECK THE FAN SPEED IF IT IS SAME AS BEFORE REPLACE THE FAN. CAUSE NO 2 VIRUS --> IF THE PROBLEM IS RELATED TO VIRUS.  INSTALL A GOOD QUALITY ANTIVIRUS SOFTWARE (AVAST, AVG AND QUICK HEAL)ETC AND SCAN THE SYSTEM. CAUSE NO 3 RECENTLY INSTALLED A SOFTWARE, HARDWARE, DEVICE DRIVER.  DRIVER UPDATE SOLUTION :- ASK THE USER FOR RECENTLY INST

SUMMARY OF INKJET PRINTER

INKJET PRINTERS THE MOST POPULAR TYPE OF PRINTER IN TODAYS MARKET IS INKJET PRINTER.  IT USES A RESERVIOR OF INK, A PUMP AND A NOZZLE.  IT WORKS EFFECIENTLY AND T IS THE CHEAPEST PRINTER IN THE MARKET STARTING 1800 BUT THE PRINTER COST IS HIGHCOMPARING TO OTHERS TYPE OF PRINTER. IT SPRAYS THE LIQUID INK ON TO A PAPER ACCORDING TO THE PATTERN OF PRINTED   DOCUMENTS.  IT SUPPORTS VERY HIGH DEFINATION OF THE DOCUMENT TYPES. PARTS OF INKJET PRINTER :- INKJET PRINTER ARE SIMPLE DEVICE.  THEY CONTAINS VERY FEW PARTS.  THEY ARE INEXPENSIVE AND EASILY AVAILABLE IN THE MARKET.THE PARTS CAN BE DIVIDED INTO THE FOLLOWING CATEGORIES  1) PRINT HEAD OF INK CARTRIDGE-->  IT CONTAINS LIQUID INK AND TWO HUNDRED TINY NOZZLES TO SPRAY THE INK IN SMALL DROPLETS. MANY TIMES A PRINTER MAYCONTAIN A RESERVOIR OF INK.  MOST COMMON COLOURS ARE USED INTO SEPARATE CARTIDGE ONE FOR BLACK AND ANOTHER ONE FOR CYAN, MAGENTA AND YELLOW.  THERE ARE TWO METHODS OF SPRAYING THE INK. • THERMAL BUBBLE --> IT IS

TROUBLE SHOOTING FOR NO DISPLAY IN PERSONAL COMPUTER.

  TROUBLESHOOTING FOR NO DISPLAY FRIENDS TODAY I AM GOING TO TELL YOU ABOUT THE CORRECT STEPS TO BE TAKEN IN ORDER TO REPAIR THE COMPUTER IF THERE IS NO DISPLAY.  MEANS THAT WHEN YOU START THE COMPUTER, THE CPU FAN AND SMPS FAN IS RUNNING ALL LED IS ON BUT THERE IS NO DISPLAY IN THE MONITOR. STEP 1  START THE COMPUTER AFTER 30 SECONDS  PRESS NUMLOCK KEY COUPLE OF TIMES. IF THE NUMLOCK LED IS GETTING ON AD OFF,  THEN THE PROBLEM IS WITH THE MONITOR.  IF THE NUMLOCK LED IS ON OR STEADY ON OR STEADY OFF THEN THE PROBLEM IS WITH THE CPU. STEP2--> SUPPOSE THE PROBLEM IS WITH THE MONITOR  1) CHECK THE AC WALL OUTLET (PLUG) AND POWER CODE WITH THE LINE TESTER OR MULTIMETER.  NOW CHECK THE POWER BUTTON IS ON AND THE BRIGHNESS EVEL OF THE MONITOR.   2) IF THERE IS NO POWER  IN THE MONITOR  THEN THE POWER PANEL MIGHT BE FAULTY.  REPAIR THE MONITOR IF THE POWER LED IS ON, EJECT THE VGA CABLE  FROM THE CPU AND MESSAGE WILL APPEAR ON THE DISPLAY.     3) IF IT DOES THEN THE VGA CABLE OR

UNDERSTANDING THE COMPUTER REGISTERS.

 REGISTERS AND ITS USES IN COMPUTER WORLD. REGISTERS AND ITS USES IN COMPUTER WORLD. “IN THIS LIFE, ALL WE HAVE IS MEMORY! ” THIS EXCLAMATORY SENTENCE IS USED BY MANY FILM MAKERS IN THEIR DIALOG.  SO DOES IT ACTUALLY MEAN SOMETHING TO THEM?  YES IT DEFINITELY MEANS EVERYTHING TO THEM AND US.  THAT’S WHY THEY SHOW THEM IN THEIR CINEMA (MOVIE, FILM WHATEVER YOU SAY).  MEMORIES MEAN EVERYTHING THAT IS STORED IN OUR BRAIN AFTER WE EXPERIENCE IT AND THEN USE IT AS A LESSON FOR LIFE  OR ENTERTAINMENT PURPOSE. HUMANS AS WELL AS ALL LIVING BEINGS DO THAT.  BUT OUR TOPIC IS  “WHAT ARE REGISTERS? WHY DO COMPUTERS NEED THEM?” SO HERE WE BEGIN. THE DISCRETE ELEMENTS OF INFORMATION IN A DIGITAL COMPUTER MUST HAVE A PHYSICAL EXISTENCE IN SOME INFORMATION STORAGE MEDIUM.  FURTHERMORE, WHEN DISCRETE ELEMENTS  OF INFORMATION ARE REPRESENTED IN BINARY FORM, THE INFORMATION STORAGE MEDIUM MUST CONTAIN BINARY STORAGE ELEMENTS FOR STORING INDIVIDUAL BITS.   A BINARY CELL IS A DEVICE THAT POSSESSES TWO STAB

HOW DO COMPUTERS UNDERSTAND BINARY LOGIC

  HOW DO COMPUTER UNDERSTAND THE BINARY LOGIC?   As we have shown in the previous post  LANGUAGE THAT COMPUTER AS WELL AS HUMAN UNDERSTAND  I am going to dig deep of that topic in this post.  I will try to explain how computer understand the binary logic.   So lets begin.   I am going to write about binary logic, that most of the computer manufacturers and developers use.                  Binary logic deals with variables that take on two discrete values and with operations that assume logical meaning.   The two values the variables take may be called by different names (e.g. true and false, yes and no, etc.), but for our purpose it is convenient to think in terms of bits and assign the values of 1 and 0.     Binary logic is used to describe, in a mathematical way, the manipulation and processing of binary information.   It is particularly suited for the analysis and design of digital systems.   For example, the digital logical circuits of many circuits that perform binary

RULES OF LOGIC ---> INTERNET PROTOCOL

 RULES OF LOGIC---->INTERNET PROTOCOL FRIENDS, TODAY I AM GOING TO DISCUSS SOMETHING ABOUT IP ADDRESSING.  IP IS A LOGICAL ADDRESS FULLFORM INTERNET PROTOCOL.  IT PROVIDES LOGICAL ADDRESS TO NETWORKING DEVICES.   THESE ADDRESSES ARE USED TO DEFINE SOURCE AND DESTINATION OF DATA PACKETS IP HAS TWO VERSIONS 1. IP VERSION 4 2. IP VERSION 6 IP VERSION 4 IT IS 32 BIT ADDRESS WRITTEN IN DECIMAL NUMBER  FORMAT  192.168.1.1 THE NUMBERS IN THE DIGITS LIKE 192.68.1.1 HERE EVERY NUMBER BEFORE THE DOT IS AN OCTET. HERE IT IS SHOWN THAT EACH DIGIT IS PRECEDED BY DOT IS AN NUMBER BELONGING TO AN OCTET LIKE FIRST OCTET, SECOND OCTET , THIRD OCTET AND FOURTH OCTET. EACH OCTET IS AN NUMBER IN BINARY FORM WRITTEN IN 2^8=256 BINARY FORM HERE THE DIGIT SHOWS THAT A VARIABLE IS IN THE BY POWER OF 2, HERE I WANT TO SAY THAT AS COMPUTER UNDERSTANDS BINARY DIGIT IN WHICH THE VARIABLES ARE 0 AND 1.  AS THE COMPUTER UNDERSTANDS BINARY DIGIT SO IT HAS ONLY 2 VALUES. HENCE THE POWER IS WRITTEN IN 2. SO THE