CONTINUE :- NO DISPLAY PROBLEMS
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9. Week display (display is getting blurry sometimes then getting fixed gain.) this fault is of monitor only.
· The monitor interface cable is bad.
· There is a loss connection of the monitor to the display card.
· The brightness and connection control of the monitor is poor.
· This error can be corrected by adjusting the variable resistance for brightness in the monitor circuit.
10. Junk display (ASCII
characters and square blocks coming up ON the monitor)
· The memory (D RAM) in the VGA/ display card is bad.
11. Display is getting but sometimes is disappears but the system is not rebooting.
· The crystal in the VGA card is loose connection. Or has gone bad.
· The brightness and contrast control of the monitor is detective.
· There is a loose connection between the monitor and the display card.
12. The display sometimes comes ON and the system reboot.
· RAM is defective or mismatch.
· SMPS wattage is low and AC I/P are getting low.
· PG signal (over wire) is never being received by SMPS. SMPS circuit is defective.
· The current received by the SMPS in the motherboard is loose connection.
· The jumper setting for the processor is incorrect.
· The reset switch is getting shot.
· The motherboard circuit is shorting out of the cabinet.
· Motherboard has any SMD is dry.(motherboard faulty)
13. Getting black display on white background and then disappearing sometimes getting correct display for a while.
. The CGA monitor also has the facility to receive black text on a white page or white text on a black page. It was selected by a switch in the black of the monitor. But currently SCGA monitors are in vogue, in which while text is obtained on a black background.
. The reason for the above problem in SVGA monitor is the low wattage of the SMPS and the receiving board (AC I/p) of the SMPS is low or any DRAM of the display card is bad.
14. Instead of display, black and white stripes are getting on the screen. (Post OK and beep is getting turned off and on, this bar disappears and the display is being received.
. This problem is not with the computer but with the monitor, the liniarty of the monitor has become mistune. This can be corrected by opening the monitor and rotating the linearity control preset on it. Some monitors have external liniorty controls that can be rotated to get the display.
15. The system is hanging on receiving the display. (No error massage received.)
· The circuit of an interface card is shorted. Especially the sound card`s regulator device (remove the interface card and check the system)
· Bios may be defective.
· The processor has overheated and got damaged.
· RAM has become partially defective.
· The CPU fan is not working or is not spinning which is causing the system to hang due to overheating of the processor.
16. Counting the RAM after receiving the display, the system is hanging and the size of the RAM is also getting wrong.
· Ram is effective.
· There is a RAM miss match with the motherboard.
· If two are engaged then the system is hanging due to mismatching due to different brands.
17. Memory test failed message is being received but by pressing F1 the system is booting as well.18. “Check error default value loaded” massage is being received. The system is booting when F1 is pressed.
· The system battery is faulty or discharged.
· In CMOS, whatever we are selecting according to the device installed in the system, it is not able to be saved. Such devices will not work. For this:
· Battery replacement is needed.
· The battery has a loose connection to the socket.
· The jumper setting of Bios in the mother board is wrong or the jumper has been set for clear CMOS setup.
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