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Friday, 5 April 2013

Processor and Its Specifications 

Processors and its specifications are very important, when you buy a PC. but how to we find a processor specifications? there are so many ways to know specifications of a PC. but here we discuss about processor only.

 

Any processor we find the specification on top of the processor. see the above image, in this processor we see some indications. in this processor A is a processor name (Intel Core 2 Duo) Intel is the Company name and Core 2 Duo is the processor version name, B is clock speed or processor speed (2.66GHz), C is Level 2 Cache Memory (6MB), D is FSB speed (1333) and E is Core Voltage (0.6 Volts). these are the specification on top of a processor.

SOLUTION FOR MOTHERBOARD BIOS SAVING PROBLEM
1. CMOS Battery jump check (if any) have been set correctly.
2. Damaged circuit voltage for IC memory configuration. See Fig.
3. IC-rather die, or IC-welded foot rot.

Tuesday, 2 April 2013

Your System Is Running Low On Virtual Memory


New computers today usually have a minimum of 512MB of memory installed with WiFi networking capability, but when the total of temporary details that needs storing surpasses the memory they write some of it the hard disk. The space used to allocate this is known as virtual memory. If this space has not been set up correctly, it will start to complain. It's usually best to let Windows decide how much virtual memory should be available. In order to do this, right-click on My Computer and select Properties. Select on the Advanced tab, under Performance, click the Settings button. Click on the Advance tab once more and, at the bottom, click Change. Make sure that the 'System managed size' option is selected and click the Set button. Finally, click OK and restart the PC.
Application [Program Name] is not responding 

This error comes in all Windows versions, though error messages and options vary slightly for every operating system. In most scenarios, the cause mostly is the program that is having too long to respond than projected to complete its function. But before clicking 'End now' or 'Close the program', it's recommended to give the program a opportunity to finish what it is doing and only appears if a program is still running but attempting to do something difficult. If a certain program keeps producing this kind of error, it's recommended to check any updates or re-installing the program completely.
Turn On The PC And Nothing Happens

What is the first thing you will do after you plug your PC and found out that it has no lights, no beeps, no fan noise and no hard drive noise? Check your PC if it was plugged in! Let's say all connections are okay after you've double check, the first culprit here is the power connector. Check if the power connector is functioning. Also check for any rat or animal bite impressions on the connector, sometimes animal bite cuts wire connections. The second culprit here is the AVR or UPS; fuse maybe blown. The third culprit here is the Power Supply; you can find this on the back-top of the PC.



This is a very common problem, and most of the time, it has a very easy fix. Follow the below steps:
  1. Power - Verify that the monitor has power and the power cord is firmly attached. Detailed instructions for accomplishing this task can be found above.
  2. Video Cable - Double check that the video cable is connected to the computer. If the cable has become loose you may need to push it back in and tighten the screws that hold it in place.
  3. Brightness & Contrast - Check the brightness and contrast controls on the monitor; It might have gotten bumped or changed accidentally. It may sound stupid, but this was one of the most common causes for people bringing their monitor in for repair when my friend work at a computer store. Most monitors have a button on them to reset all of the settings -- try pushing that.
  4. Swap Parts - If possible, try swapping with another monitor that is known to work and vice-versa. If your monitor works on another computer, than the problem, most likely lies with your video card and/or motherboard. If your computer works with another monitor it might be time to invest in a new monitor.
  5. Push In Video Card - Open up your machine and firmly push down on your video card so that you are sure that it is making contact with all of the contacts in the slot. If you computer was jumped and the screw that holds it down was not tight enough it could have come loose.
Overheating solution for laptop
Symptom: 
Computer crashes, freezes
 
Solution: 
Clean out air vents, put filtered material over the inhalation vent, or update BIOS

Overheating can rob your laptop of performance and often cause a host of hiccups, such as system crashes and freezing. Every computer generates lots of heat, but laptops are especially susceptible to overheating due to their small size and lack of ventilation. Excessive dust can clog air vents and deprive your system of cold air to cool off the CPU. You can often solve overheating issues simply by cleaning out these air vents with a cloth or keyboard cleaner.

To prevent further dust buildup, place a piece of filtered cloth, say from a Swiffer, over the inhalation vent. Don't place one over the exhaust vent, as that's where hot air is supposed to flow out of the system quickly. If the cloth doesn't work, you may want to update your system's BIOS, which controls the laptop's hardware. Most manufacturers offer an installation file that updates BIOS files automatically, which often address heat management. Just make sure that your notebook is connected to the power supply when updating the BIOS.

Monday, 1 April 2013

AT, ATX, BTX SMPS Connectors, voltages and functions 

There are three types of SMPSs. They are AT, ATX, BTX. These three types of SMPSs have different connectors and each wire has different voltages. Here the connectors and its voltages.


AT SMPSs have 12 pin power connector, ATX SMPSs have 20 pin power connector and BTX SMPSs have 24 and 28 pin power connectors. AT power supplies were used in 80’s and from 1996 we use ATX power supplies.  Here are the AT, ATX and BTX SMPSs voltages and users.

 Smps                                 AT                   ATX                   BTX

Red                                 +5v                    +5v                     +5v
Yellow                             +12v                  +12v                   +12v
Blue                                 -12v                  -12v                     -12v
White                               -5v                    -5v                       -5v
Black                                0v                      0v                       0v
Orange                            +5v                   +3.3v                   +3.3v
Green                               ----                    +5v                      +5v
Gray or Brown                 ----                    +5v                      +5v
Purple                               ----                    +5v                      +5v


Red                 : it is used for signal sending
Yellow             : It is used for motor running
White &Blue: It is used for backward compatibility
Black               : It is used for grounding purpose
Orange            : It is used for power good signal
Green              : It is used for power supply on in ATX
Gray & Brown: It is used for power good signal in ATX
Purple              : It is used for auto shutdown in ATX
 

 

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