Question about HP Pavilion a400n (DQ173A#ABA) PC Desktop

1 Answer

"No Signal" on monitor after boot

I had to replace the power supply after a power surge. Now computer will power up, but right after the "Windows XP" screen displays, the monitor goes black and shows "no signal". The computer is still booting, because I can hear the Windows tune. Tried another monitor with the same results. Is my graphics card bad?

Posted by on

  • goose93 Aug 24, 2008

    Thanks! I tried moving the graphics card to another slot, and it worked for a few minutes but the resolution was wrong. When I was changing the resolution settings, the monitor went blank and said " no signal" again.



    I'll try a new card next. Thank you!

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

Hi try to use different slot on your motherboard see if that helps if not try different video card...if that didn't help it might be your motherboard that went bad

Posted on Aug 24, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

MY ACER DESKTOP ALWAYS RESTARTING


Hi Joey
Can say much because you haven't included enough details; however,first things first, check your power supply. The UPS sometimes causes this kind of problem. A simple diagnosis would be to connect the CPU and monitor directly to the mains supply - make sure you use a surge protected power board for a brief check.
If your CPU boots normal, you need to get a new UPS.

Oct 06, 2014 | Acer PC Desktops

1 Answer

Power light off


Power surges are damaging spikes of voltage in an electrical systems, caused by lightning strikes, changes or problems with the electrical grid, or large appliances.

Power surges damage or destroy computer hardware by overheating circuit boards and other components.

Surge protectors and other devices are used to protect computers and other electrical devices from power surges.

If damage occurs to a computer from a power surge, a process of trial and error is used to replace the damaged components.


Replace the surge protector or power strip.
If neither was attached to the computer, it is highly recommended that one be used.

Follow the user's manual to open the computer.
The computer manual may have shipped with the computer in book or CD form or may be found online.

Examine the system and make note of any visibly damaged components.
Damaged components may show visible burn damage or no damage at all.


Follow the user manual to remove the power supply.
You will need to unplug the power connections to each device in the computer as well as the system board.

WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Only work inside the computer case when the power has been switched off and disconnected. Never open the power source.

Some of the below steps recommend removing physical parts within the computer.
While in the computer it is highly recommend that you be aware of ESD and its potential hazards.


Removal is generally achieved by removing the holding screws and lifting the power supply out of the system.

Follow the user manual to install the new power supply.
Plug the power cables into the computer components and the system board.

Close the case.
Do not re-insert the screws.

Plug the power cable into the computer and attempt to power the computer on.

Replace the power cables to the monitor and computer.
Examine the monitor.

If the monitor does not power on, it will need to be replaced.
Determine if both the monitor and computer power on.

If the monitor powers on but the computer does not replace the system board.
If both power on but there is no video signal, replace the video card.

Boot the system into Windows.
Go to the "Control Panel" and double-click on the "System" icon.

Click on the "Hardware" tab.
Double-click the network card, sound card, and other peripherals that are listed in the hardware tab.

If you replaced the system board, ensure that the device drivers are in place for the peripherals. Replace any peripheral that is still non-functional.

Computer Repair Tutorial Help and Tips

http://www.thepcmanwebsite.com/computer_repair.shtml

Dec 08, 2013 | Dell Vostro 410 Desktop Computer

1 Answer

I can not turn it on. How can I fix a no power problem?


Test your PSU power supply unit or replace it if your power supply units fan is not working your PSU is faulty
http://pcsupport.about.com/od/toolsofthetrade/f/powersupplytest.htm
Testing and replacing the PC power supply
http://www.youtube.com/watch?v=hbNxhvm0czs
One bad lead can cause a computer to continue on a cycle of restarting or to shutdown or fail to detect ,boot up a computer hard drive
WARNING Before you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Only work inside the computer case when the power has been switched off and disconnected. Never open the power source.
Some of the below steps recommend removing physical parts within the computer.
While in the computer it is highly recommend that you be aware of ESD and its potential hazards

Power surges are damaging spikes of voltage in an electrical systems, caused by lightning strikes, changes or problems with the electrical grid, or large appliances.
Power surges damage or destroy computer hardware by overheating circuit boards and other components.
Surge protectors and other devices are used to protect computers and other electrical devices from power surges.
If damage occurs to a computer from a power surge, a process of trial and error is used to replace the damaged components.
Replace the surge protector or power strip.
If neither was attached to the computer, it is highly recommended that one be used.

Follow the user's manual to open the computer.
The computer manual may have shipped with the computer in book or CD form or may be found online.
Examine the system and make note of any visibly damaged components.
Damaged components may show visible burn damage or no damage at all.


Follow the user manual to remove the power supply.
You will need to unplug the power connections to each device in the computer as well as the system board.
Removal is generally achieved by removing the holding screws and lifting the power supply out of the system.


Follow the user manual to install the new power supply.
Plug the power cables into the computer components and the system board.


Close the case.
Do not re-insert the screws.
Plug the power cable into the computer and attempt to power the computer on.


Replace the power cables to the monitor and computer.
Examine the monitor.
If the monitor does not power on, it will need to be replaced.

Determine if both the monitor and computer power on.
If the monitor powers on but the computer does not replace the system board.
If both power on but there is no video signal, replace the video card.
Boot the system into Windows.
Go to the "Control Panel" and double-click on the "System" icon.

Click on the "Hardware" tab. Double-click the network card, sound card, and other peripherals that are listed in the hardware tab.
If you replaced the system board, ensure that the device drivers are in place for the peripherals. Replace any peripheral that is still non-functional.


Computer Repair Tutorial Help and Tips
http://www.thepcmanwebsite.com/computer_repair.shtml

Jul 01, 2013 | Lenovo IdeaCentre K320 3019 PC Desktop

1 Answer

Change screen orientation


Computer users occasionally have a need to rotate, or "flip," a monitor display to be better able to read long documents or to view pictures. Because rotating a computer screen is such a basic function, modern operating systems (Windows XP and up) include hot keys and display options that enable the user to rotate the computer screen by 90, 180 and 270 degrees. Rotating the computer screen allows for more display options. For instance, when rotated 90 degrees, a 1680x1050 monitor becomes a 1050x1680 monitor, which provides more vertical pixels than a standard display.

Windows XP/Vista Monitor Orientation
Minimize any windows or programs to the taskbar. Click the desktop. Press "CTRL" + "ALT" at the same time. Press one of the arrow keys to flip the monitor orientation by 90, 180 or 270 degrees. The left arrow rotates the computer screen 90 degrees; the down arrow rotates the computer screen 180 degrees; the right arrow rotates the computer screen 270 degrees; the up arrow resets the monitor orientation. Rotate the computer screen in Windows Vista by opening the Control Panel, searching for "Tablet PC" and changing the "Orientation" drop box to the desired rotation. b> Windows 7 Monitor Orientation b> Click the Start menu at the lower-left hand part of the screen, and open the Control Panel. Select "Display," then click "Change display settings" from the left column. When using multiple monitors, select the monitor that you would like to rotate. Click the drop box next to the "Orientation:" option. Select the desired rotation and click "Apply." Click "Keep Changes" or "Revert," depending on preference. Click "Apply" in the Display Settings window. Click "OK" to finish. Hope this helps

b>

Dec 14, 2012 | Dell PC Desktops

1 Answer

Nothing on the monitor, the computer powers up and e machine f2 comes up on the screen then goes blank


hello bradprice258

I am assuming you have an LCD monitor

when the computer turns on look carefully at the front face of you computer case, there are two small LED lights. one is power and one is hard disk activity.

look at the one for hard disk activity. watch it for a few mintues, if it is activly blinking and then turns off or becomes a random blink then it means the possibility is a faulty monitor. LCD monitors do that once they age or get hit by power surges or black outs.

if both lights in front of the case go out as you loose display then the problem is with Po itself. could be bad power supply of main board.

hope this has been of help.
please do leave comment if this has helped.

Feb 10, 2011 | E-Machines eMachines Desktop PC

1 Answer

I have an Emachines W3609 desktop with windows vista. One day i powered it on and the fan ran hard and i got three beeps and no display in the monitor. I went into the case removed the ram and found 1 ram...


i seem the power supply gone bad, it is hard to say what is the problem actually, you need to check all of your devices(processor, ram, video card, motherboard and power supply) to some other system one by one for confirmation.

Nov 05, 2010 | PC Desktops

1 Answer

My desktop dont come on


1) Check THE receptacle in the surge protector the computer is plugged into.

I have found more than once that One bad receptacle in the surge protector is bad.

"Hmmm, surge protector power on light is lit." "Monitor has power, amp for the speakers has power, and the router has power."
All plugged in to the same surge protector.

Tried a table lamp into the receptacle the computer was plugged into, Nothing.
Replace surge protector.

2) Bypass the Soft Power On of the Power Supply, and see if the problem is the Power On switch, or the Power Supply.

If you bypass the Soft Power On of the Power Supply, and the Power Supply comes on, the problem is a bad Power On switch.

If you bypass the Soft Power On of the Power Supply, and the Power Supply does Not come on, the problem is the Power Supply.

If you wish to know how to perform this simple test, just state so in a Comment.
(Believe upper right of your page)

Jun 17, 2010 | E-Machines eMachines Desktop PC

2 Answers

When I boot up my computer, up to the point where it displays Windows XP, the monitor blanks out. The power button on the monitor goes from green to orange as if it's not receiving any signal from the...


Dear User,
you are great becuase what startup remedy is required all are you done . Now i am suggesting you that check your system SMPS (Switched Mode Power supply), if the SMPS is not providing proper power supply to the system then this kind of problems occure.

If my answer is helpful please rate.....

Feb 28, 2010 | PC Desktops

1 Answer

The power went off in my house for 15 minutes. When it came back on everything worked except the Gateway PC with Windows XP and the monitor which was connected to a surge suppressor. The PC won;t come on...


If the monitor is out as well then the surge suppressor did its job and took the hit, basically rendering it useless now, try plugging in the system and monitor directly to the wall, it they work then you need to replace the surge suppressor.

Sep 19, 2009 | Gateway GT5220 PC Desktop

2 Answers

Monitor displays breifly then goes to blank screen


If tried the monitor on two other computers with the same result -- definitly your monitor is faulty. Take it to the repair shop. To make double sure, run your computer with another monitor. If everything is fine now; you can blame the monitor.

Dec 17, 2008 | Dell Dimension 4600 PC Desktop

Not finding what you are looking for?
HP Pavilion a400n (DQ173A#ABA) PC Desktop Logo

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP PC Desktops Experts

Fred Sops

Level 2 Expert

271 Answers

john smith

Level 2 Expert

366 Answers

Gavindu Dileepa

Level 1 Expert

10 Answers

Are you a HP PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...