Wednesday, August 29, 2012

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Description

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Monday, August 27, 2012

crimp a cable RJ45

Making a straight cable

 

To make a straight cable, the tips must be crimped typically the same way at each end by respecting the twisted pair size.

In general, the code used is:

1) orange-white
2) orange
3) green-white
4) Blue
5) blue-white
6) Green
7) brown-white
8) brown



Making a crossover cable

For a crossover cable, swap 1 with 3, and 2 with 6, in the list above. This gives:

1) green-white
2) green
3) orange and white    
4) Blue
5) blue-white
6) orange
7) brown-white
8) brown

Saturday, August 25, 2012

Computer power supply

PINOUT, CABLES, CONNECTORS 

CHECKING OF SMPS

SHORT GREEN AND BLACK PINS IN 20 PIN CONNECTOR,

IF SMPS FAN IS RUNNING SMPS WILL BE OK NOT 100%

FOR RUNNING COMPUTER ALL SUPPLY IS NEEDY FOR COMPUTER 
+12VOLT,+5VOLT.+3.3VOLT, -5VOLT,-12VOLT

24-pin ATX12V 2.x power supply connector
(20-pin omits the last four: 11, 12, 23 and 24)
Color Signal Pin Pin Signal Color
Orange +3.3 V 1 13 +3.3 V Orange
+3.3 V sense Brown
Orange +3.3 V 2 14 −12 V Blue
Black Ground 3 15 Ground Black
Red +5 V 4 16 Power on Green
Black Ground 5 17 Ground Black
Red +5 V 6 18 Ground Black
Black Ground 7 19 Ground Black
Grey Power good 8 20 Reserved N/C
Purple +5 V standby 9 21 +5 V Red
Yellow +12 V 10 22 +5 V Red
Yellow +12 V 11 23 +5 V Red
Orange +3.3 V 12 24 Ground Black

HOW TO FIND OUT COMPUTER FAULT

STEP BY STEP COMPUTER FAULT FINDING


1-CHECK POWER CABLE

IF POWER CABLE IS UNPLUG THEN NO POWER WILL BE UPS MONITOR AND CPU ,NOW PLUG POWER CABLE PROBLEM WILL SOLVE.

2-CHECK UPS IS ON OR NOT

CHECK UPS POWER BUTTON IS ON OR NOT.

3-CHECK CPU CABINET LED STATUS

THERE ARE TWO LED IN CABINET 

A-HDD LED
B-POWER LED

IF AFTER POWER BUTTON PRESSING NO LED GLOW CHECK SMPS
IF POWER LED IS GLOWING HEAR BEEP SOND COMMING FROM CABINET.

BEEP CODE ARE  

Beeps
Error Message
Description
1long, 2 short Video adapter error Either video adapter is bad or is not seated properly.  Also, check to ensure the monitor cable is connected properly.
Repeating (endless loop) Memory error Check for improperly seated or missing memory.
1long, 3short No video card or bad video RAM Reseat or replace the video card.
High frequency beeeps while running Overheated CPU Check the CPU fan for proper operation. Check the case for proper air flow.
Repeating High/Low CPU Either the CPU is not seated properly or the CPU is damaged. May also be due to excess heat. Check the CPU fan or BIOS settings for proper fan speed.

  

4-CHECK KEBOARD NUMLOCK LED STATUS

IF NUM LOCK KEY IS GLOWING ON OFF AFTER PRESSING KEY THAT MEANS SIGNALS ARE COMMING FROM CPU AND PROBLEM IS IN MONITOR  VGA CABLE & DISPLAY CARD CHECK STEP BY STEP  .

 

5-HEAR BEEP SOUND COMMING FROM CPU 

1 Continuous Beep

One continuous beep isn't an officially listed Phoenix beep code but I know of several instances of this occurring. In at least one case, the solution was to reseat the CPU.

1 Long Beep, 2 Short Beeps

One long beep followed by two short beeps indicates that there has been a checksum error. This means that there is some kind of motherboard issue. Replacing the motherboard should fix this problem.
 

1-1-1-1 Beep Code Pattern

Technically, a 1-1-1-1 beep code pattern doesn't exist but I've seen it and many readers have too. Most often, it's a problem with the system memory. This Phoenix BIOS issue is usually corrected by replacing the RAM.

1-2-2-3 Beep Code Pattern

A 1-2-2-3 beep code pattern means that there has been a BIOS ROM checksum error. Literally, this would indicate an issue with the BIOS chip on the motherboard. Since replacing a BIOS chip is often not possible, this Phoenix BIOS issue is usually corrected by replacing the entire motherboard.

1-3-1-1 Beep Code Pattern

A 1-3-1-1 beep code pattern on a PhoenixBIOS system means that there has been an issue while testing the DRAM refresh. This could be a problem with the system memory, an expansion card, or the motherboard.

1-3-1-3 Beep Code Pattern

A 1-3-1-3 beep code pattern means that the 8742 keyboard controller test has failed. This usually means that there is a problem with the currently connected keyboard but it could also indicate a motherboard issue.

1-3-4-1 Beep Code Pattern

A 1-3-1-1 beep code pattern on a PhoenixBIOS system means that there is some kind of issue with the RAM. Replacing the system memory usually fixes this problem.

6-CHECK VGA CABLE

IF MONITOR SHOWING SIGNAL MESSAGE CHECK VGA CABLE.

ENJOY THIS 

Monday, August 20, 2012

HOW TO UNINSTALL QUICK HEAL CLIENT AGENT

OPEN COMMOND PROMPT (RUN->CMD)

GO QUICK HEAL DIRECTORY THOUGH CD COMMOND

TYPE C:\PROGRAM FILE\QUICK HEAL\CLIENT AGENT 4.6\AGUNIST /SILENT QUICKHEAL

RETYPE THIS COMMOND TILL ALL FILE BECOME UNINSTALL FROM QUICK HEAL FOLDER

USE AND ENJOY THIS

SYSTEM AGAIN AND AGAIN BOOTING

MOST OF TIME WHEN HARDDISK HAVE BAD SECTOR 

DUE TO THIS SOME OS FILE BECOME LOSS AND SYSTEM AGAIN AGAIN REBOOT 

TO SOLVE THIS PROBLEM 

INSERT XP BOOTABLE CD BOOT FROM CD

PRESS R TO REPAIR OS 

ENTER ADMINISTRATOR PASSWORD

RUN COMMOND C:/CHKDSK /P

REBOOT SYSTEM 

I THINK YOUR SYSTE NOW BECOME OK

How to Recover Ntfs Partition

MOST OF TIME DUE TO POWER FLACTUATION NTFS PARTITON DAMAGED 
AND OUR ALL DATA LOSSED .
ONE DAY I FACE THIS PROBLEM I TRIED MANY TRIAL SOFTWARE TO RECOVER MY PARTITION BUT I WAS UNABLE .
AT LAST I THINK THAT MAKE MY DRIVE TO SLAVE TAKE REMAINING DATA BACKUP INTO ANOTHER DRVER .
I SAW THAT WHEN I BOOT ANOTHER SYSTEM WITH MY CURRUPT NTFS DRIVE DISL CHECK UTILITY START AUTOMATICALY AND MY CURRUPT PARTITION BECOME OK