Can you boot up with a floppy disk but not the hard disk?(
Possible Reasons for Monitor not working
Actions to take for monitorR
If yes, is it distorted for one particular software program. (versus all the time)$
Possible reasons for CPU not working
Actions to take for CPU#
Do you get an initial memory count?B
Does the computer produce a series of beeps when it is powered up?/
Do you get "Read Errors" while you are working?
Do you get "Parity Errors"?
Does your keyboard work at all?6
Is the problem related to only one key on the keyboard)
Does the problem only occur occasionally?-
Possible reasons for keyboard to malfunction.#
Actions to solve keyboard problems.
Close Form
System Monospaced
Courier
Computer Diagnosis System#
Monitor
Keyboard
Click on the part that is malfunctioning3
Answer questions in orderz
Answer questions in orderW
Answer questions in orderS
PC Diagnostics
This application is an example of how ObjectVision uses value and event trees to calculate a result.
To use this application, simply click on the part of the computer where there seems to be a problem. A series of questions appears on a form. Answer the yes or no questions from the top down. When you answer a question with a possible solution, that solution is displayed. You may want to look at the decision tree of the solutions.
No symptoms listed that can track the problem.
This usually indicates that the software is setup incorrectly and is trying to send out monochrome (one color) signals to the monitor.A
The display being distorted is usually caused by 1) the monitor being out of adjustment, 2) the video card is defective, 3) The monitor is defective, or 4) The software video driver is not correct for this monitor.A
You probably need to adjust the Vertical Hold.A
Since the power light works, you either: 1. Don't have a signal from the computer, 2. You have to make an adjustment to the monitor, or 3. The monitor is defective.A
1) Your power source is not turned on or is malfunctioning. 2) Your on/off switch is off.A
Connect another monitor to your computer to test if the source is the computer or the monitor. If the test monitor works, then the source of the problem is your monitor. Some monitors have added adjustment capability that make the display wider or narrower. If adjusting doesn't help, you probably have a defective monitor.
Read the instructions for the software you are trying to use. Look specifically for information related to Graphics Drivers or setup of you display.
No symptoms listed that can track the problem.
Read the instructions for the software you are trying to use. Look specifically for information related to Graphics Drivers or setup of you display.A
Locate the vertical hold adjustment and test if you can adjust the monitor to hold. If not, your monitor is probably defective.A
If you have another monitor with which you can test, use that monitor with your computer. If the test monitor works, then the source of the problem is your monitor and you should check to see if your contrast and brightness adjustments are correct or whether your cable to you computer came loose. If all of the above has been checked, you probably have a defective monitor.A
Check the power source to make sure the monitor has power or check the on/off switch status.A
"Parity Errors" usually indicate a bad ram chip. A
"Read Errors" indicate that the computer is requesting information from the hard disk and the hard disk is not able to produce it. Either the hard disk is defective or the media where the information is stored is bad. A
If your computer doesn't give you an initial memory count, you probably have a bad memory chip or the motherboard is defective.A
This usually indicates that the system files on the hard disk have something wrong with them. A
These beeps are to communicate what is wrong with the computer. You will need to read your owner's manual for your computer to determine the meaning of the beeps.A
Your power source has failed or you don't have the on/off switch on.A
Acquire a software program to test for bad ram chips or take your computer to a professional technician.A
Bad sectors are very typical on hard disks. There is software available to analyze your hard drive and mark out bad or marginal sectors. Either purchase one of these software packages or take your computer to a professional technician.A
You will need to replace the bad memory chip(s) or the mother board. This will probably require a professional technician.A
Boot up with DOS diskette. At the A:> prompt type "SYS C:". After the system is transferred type "COPY COMMAND.COM C:\". If you can't perform either of these tasks, your hard drive may need to be reformatted or replaced.A
Check your manual for the meaning of the beeps.A
Check your power source for loose connections or no power. Check your on/off switch on the CPU or your surge protector.A
You probably have a connection to your computer that is loose or a key is worn out.A
If only one key is having problems, the connection is not complete when you press down on the key. This is usually caused by something spilled on the keyboard or a worn keyboard.A
This usually indicates a loose connection with the computer or the software has locked the keyboard somehow.A
If only one key is having problems, the connection is not complete when you press down on the key. This is usually caused by something spilled on the keyboard or a worn keyboard.
These problems are the hardest to solve since it may not be apparent what is causing the problem. You should probably borrow a keyboard from someone to see if the problem is resolved. If no keyboard is available, you may have to just replace your keyboard.A
Sometimes you can have the keyboard taken apart to fix the keyboard, but it would probably be less expensive simply to purchase a new keyboard.A
Check your connection to your computer or try to close all your programs with your mouse and reboot the computer. If neither of these work, you probably have a bad keyboard. Borrow someone elses keyboard to see if theirs works. If theirs does work, you have a defective keyboard. Otherwise you probably have a bad motherboard.A
Sometimes you can have the keyboard taken apart to fix the keyboard, but it would probably be less expensive simply to purchase a new keyboard.
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