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Computer starts but doesn't boot

Computer turns on but will not boot. All I get is black screen on monitor. I hear all fans etc. running. Any idea what it may be and how much it would cost to fix it, or even if its worth fixing?

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  • Abhi18 May 20, 2008

    my pc starts but does not boot

    only a blank screen is displayed on the monitor

    i have checked all the internalo and external power connections

    can you please offer me some solutions?

  • byteme813266 May 02, 2009

    my computer starts and loads but then when its supposed to go to the page with all the users, it turns into a blank page with just a mouse showing that i can move, but do nothing else with. help? by the way its a SVA monitor with Dell Microsoft xp cpu too

  • Anonymous May 03, 2009

    my computer seems to have a similar problem, ill turn it on and than the moniter will just remain blank, and i dont even hear it trying to start up, if anyone has any ideas please let me know

  • Kenneth  Keaton
    Kenneth Keaton May 11, 2010

    lets not get too hasty... It can also be a bad memory module(s). It could take some time to find out exactly whats wrong, but if you have time, and another PC to test some parts in it will help. First things first,.. with the computer off,.. pull out and re-seat the memory and try to reboot. If that doesn't work, and you have access to a known working memory module that is compatible ( same type and speed preferably ) remove the modules installed, put in the spare and try and boot. If no boot,.. then you know its probably not memory ( though I still recommend trying the modules in another PC and running memtest+ to test them ( a no-cost program download able from the net ). My main question,.. are you comfortable with opening your computer and getting your hands dirty... I'll help you as much as I can just let me know.

  • Patrick Michaels
    Patrick Michaels May 11, 2010 get nada? that means your motherboard is shot..those are not too much(100 or so) and powersupply(another 25)..

    you'll need to know what m/b you have, does this computer have a name on it?


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Try to uninstall the cord of your monitor going to the cpu this might be loose. if you are using an expansion video card try to remove this and clean this with a pencil eraser. you forgot to specify if you are hearing some beeps upon power on. if there is no beep then the problem is just the connection from your monitor to this videocard(cpu) just try to uninstall then reconnect

Posted on Mar 17, 2008

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I've got the same problem, but when it happened the first time, my parents let me open the computer and... well, do whatever I want with it. anyways, I kept many parts intact, and now I tried to make it back together(with a power supply without a cooler)
first time it worked, but after I downloaded and mounted slax(the new os that I thought would be run better than win xp), it just didn't wokr. I took the bios ic, processor, ram and disconnected the hard disk, then put them back together, and nothing. it just spins the cooler and light the leds. since it's a amd k6 II (similar to pentium 2), I can't test the parts on my "good".

Posted on May 03, 2008

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HP Pavilion a 1245c won't boot black screen no beeps constant running fan

sound to me like a video problem. no beep codes, you hear the fan going so it must be posting. could you try with other monitor and or cable? is there power to monitor? reseat cable at both ends( monitor+ pc)

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Is there any message that appears when you turn the computer on? Does anything post to the monitor during the boot process? Normally if the Video Card goes bad and the monitor works you will get a No Signal message on the Monitor. So you are so sure the monitor works, huh?

Since you went inside the computer check and make sure you pushed the Video Card (where the monitor plugs into the back of the computer) into the slot all the way.

Maybe your Power Supply is not working. When you press the power button do the fans start running and you hear the disk drive spinning? Just because you see a light at the the power button or on the motherboard does not mean the Power Supply is working correctly. I just changed one that did that.

Remove the Power Cord, Open the Case and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.You didn't by chance remove the Heat Sink and CPU while you were removing the fan did you? If you did, you probably need to apply a fresh coat of Thermal Past between the Heat Sink and CPU.

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After powering on monitor says no sync

I've almost the same problem. When the system turns on the monitor doesn't sync. After a variable trials with down/up the sync is enabled and the computer starts.A very clear event occurs : when the monitor can''t sync ( and system doesn't boot)you can hear very clear a high fan rotation. When I look/hear in the system the Isuspect the cpu fan. The system boots ( monitor syncs) when the fan rotationgoes from high to low. So the system hangs on an internal check on the rotation speed of the cpu fan.I've googled a lot , but until now doesn't find an answer . Possibilties which I think about : replace cpu fan , clean cpu fun ( but it looks clean).I cannot measure the fan rotation speed when the system is hanging. At normal rotation all info can retrieved witth the program cpu-z.Did you already have a solution ?

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I have a Compaq Presario SR2020NX. I press the power button and the fan comes on, the green light is bright , the cd drive blinks then stops as if the computer is starting but nothing happens. The fan...

Disconnect the drive and try to boot to the BIOS (usually with F1, F2 or Delete key). If that doesn't work, try removing all cards from the computer (except a video card if the video port is not on the motherboard). If you can boot this way, try inserting back any removed cards to see what hangs it. Do you hear any beeps when the computer is booting (beep codes)?

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My Dell Optiplex gx260 Pentium 4 Flat CPU doesn't Display anything, and Power light is Orange.. Please help me out

You say the power light is orange--I'm assuming that you mean the monitor.
This indicates the monitor is not receiving a signal from the computer.
Assuming that the computer actually powers up (fan runs, you can hear the hard drive being accessed, etc) then your problem lies in the video card.

If, on startup, you do see the BIOS info and maybe even the Windows splash screen before your monitor goes dark, then the problem lies in the video card drivers. In this case, starting in safe mode will work and allow you to download and install new drivers.

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My computer is on but screen is black

Hi, Top ten Reasons you get a blank screen on your computer monitor

The dreaded death-screen

1. The monitor is turned OFF or the cables are disconnected. This could happen at any time during the lifecycle of the computer. Or maybe the system has gone into power conserving mode. Perform the following checks:

a. Power cycle the monitor (turn OFF and then ON) and wait for a minute or two to see if screen lights up.
b. Wiggle the mouse or press ENTER on the keyboard and watch the display screen.
c. Check the power supply to the monitor and the cables connecting the monitor to the computer.
d. Check that there is a connection between the keyboard and the computer. If the keyboard is not connected or if it has just been hosed, or if the computer restart has not initialized the keyboard before it stopped and gave you the blank screen, then your none of the keys work!
e. After the above checks, restart the computer and see if it is okay.

2. A component in the computer (such as a graphics card) may have overheated. In older computers, the fans were very powerful (remember the loud computers of yesteryears?). Now the manufacturers assume that computers sit in air-conditioned comfort all day. So they have reduced the power of these fans that are used to cool the hardware. Follow these procedures to see if that is the problem.

a. Shut down your computer and monitor.
b. Turn on the air-conditioning and install an additional fan in the room if possible
c. After a pause of 15 - 30 minutes, restart the monitor and then the computer.
d. If it was a problem of overheating, the computer screen should now show the system booting normally.

3. If you have just installed the computer and nothing seems to work, it could a bad monitor or a low power supply.

a. Check if the monitor light is green, orange, yellow or red. Get the manual for the monitor to find out what these colors mean.
b. Swap the monitor with another if you have an extra one at home.
c. Insert a music CD into its drive and check if you can hear audio. This will only happen if the CD is set to Auto Run. If you can hear audio, it means the computer is running ok.
d. Find a different power supply outlet (or power strip) for the monitor and computer and try to reboot the computer again.
e. If the LCD screen on the monitor is dead, then it's impossible to see if the computer is booting up or to what point it has booted up.
f. Replace your monitor if it's defective or continue to Step 4 if you still have problems.

4. Recent Hardware Changes. Corrupt drivers for any recently installed hardware can crash the system. To get rid of the corrupted drivers, do the following:

a. Uninstall all recently added hardware.
b. Try to restore the system to a previous restore point
c. Reboot the system and return to a previous stable configuration if possible
d. Remove all external peripherals (printer, cameras, scanners, etc) and connections until the computer returns to normal.

5. Bad video/graphics card. At this point, if your computer is still under warranty, its time to call for help. If not, you can get a computer geek to come to your house (it is cheaper to take your computer to their store) or try to fix the problem yourself.

a. Is AGP/PCI video card compatible with your operating system? If you are experienced with opening up the chassis and resetting cards, reseat the video card, and try again.
b. Check the pins on the cable connectors and see that they are not bent or broken.
c. Never attempt to open the monitor. Turn on the monitor and try to reboot the computer again. If this doesn't work, go to Step 6.

6. BIOS - the Binary Operating System may be corrupted - Use of Safe Mode to boot system.

a. Try starting the computer in the safe mode. Restart the computer and see the point to which it boots up before you get the blank screen.
b. Press F8 as the computer starts to boot. (For HP and Compaq computers with VISTA, use F10, For HP Pavilions with XP or earlier version of OS, use F1). Use the arrow keys to select the safe mode and press Enter. Remember that NUM LOCK should be OFF for the arrow keys to function.
c. If Windows launches before you can choose the safe mode, restart computer and go to step a.
d. You can choose "Safe mode with command prompt" option if you know how to use MS-DOS
e. You can choose "Last known good configuration" to go back to the last known safe shutdown state.
f. If you have added any drivers or corrupted any files the last time you used the computer, the safe mode will help you get back to the state before the changes, when the computer was running smoothly.

7. BIOS - the booting software may be corrupted - Use of Recovery Console to boot system

a. If the recovery console is already installed on the system, one of the options you see while the system is initially booting up will be "Microsoft Windows Recovery Console". If it's not already on the system, it can also be accessed through the network during "command prompt with network" option in safe mode.
b. Recovery console can also be installed at the time of need from the CD-ROM. Go to the following link for additional info :
c. Recovery console helps to Enable or disable services. If Windows informs us during boot up that a file is corrupted or missing, then we can use the Recovery console to copy files from a CD to the computer to repair the corrupted or missing information.
d. You can also recover the system by reconfiguring a service that may be preventing your computer from starting correctly. (FIXMBR, FIXBOOT, etc)
e. For a list of Recovery Console commands, search :

8. Corrupted Operating System. - Try an upgrade of the current Operating System.

a. Before you re-install the operating system, check out
b. Try to upgrade the current operating system by inserting the CD-ROM and choosing "Upgrade" in the "Installation Type" box and then click next
c. Continue as detailed in to complete the upgrade.
d. If there were patches or updates to the previous version of the OS that fixed booting problems or missing files, then the computer should be fixed and good to go. If not, repeat with step e
e. Alternately, to re-install the OS, when the message "Press any key to boot from CD" appears, tap the spacebar.
f. Press ENTER to setup XP on the computer (fresh start- all setting go back to default)
g. On the License screen, press F8 to agree to the license agreement.
h. Select your current installation and press R to repair the installation.

9. Hard Disk Crash. This is one of the major reasons for black screens. A new computer will run reasonably well for about 2 - 3 years. After that, we'd better take precautions to manage our information in case of a disk crash. Backups are handy in case we need to re-install or replace a hard disk. To check if it's the hard disk, do the following:

a. Turn the computer on and listen to see if the fan is running.
b. After doing all the checks above to see if the peripherals (especially the monitor) are in good working condition, restart the computer again

10. Motherboard Problems.

a. Open the chassis. Turn the computer on and verify that the CPU fan and the power supply and the fan are running. If not, make sure that the connections are tight and replace the power supply.
b. Shutdown the computer and let it cool down. Unplug all cables from power sources.
c. Closely examine the mother board and see that it is NOT in contact with the computer case.
d. Removed and re-install your DRAM
e. Remove the CPU and re-install it.
f. Reset your BIOS to the default configuration following the motherboard's manual instructions.
g. Make sure that you have replaced every item that you had removed from the chassis, close it and try to start it up
h. If none of the above works, its time to see professional help!

Notes: Computers seem to run forever, but only when it crashes do we think of how many things we could've backed up and how many restore points we could've saved! Periodically, do the following when our computers are in top running condition:

a. Make backups regularly
b. Schedule daily restore point creation.
c. Make a boot disk (see for instructions for XP)
d. Make copies of your favorite files and software
e. Create DVDs of your favorite photos and videos.
f. Save important financial/tax information on CDs etc.
g. Store copies of your favorite music on CDs or export them into other media.
h. Install Recovery console so that it may be used when computer crashes!
i. Make sure that your computer has updated anti-virus software and spyware. This will detect any attempts to install viruses that could destroy our entire system in one second!
j. Make sure that you place the computer in a well ventilated room to avoid overheating.

Hope that helps.

Nov 01, 2010 | Compaq Computers & Internet

1 Answer

Black Screen Compaq Presario

Do you see the BIOS splash screen or anything?
Try booting into safe mode by pressing F* as soon as you power on the computer. If the monitor works, then it is a bad driver. Roll back to a previous restore point, boot to last known good coonfiguration. Last Known good configuration is available from the same as the safe mode screen.

If this is helpful, please comment and rate. Have any other questions, please let me know.


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My friends Acer Aspire M5641 has a black screen and won't boot up. I cleaned out all the dust and even tried to boot using the Windows Vista recovery disk but no luck. She hasn't made any major changes...

there could be many problems in this case such as your motherboard not recieving Power , RAM have got fired, or Motherboards BIOS is failur it can be check by removing Ram if the problem is of ram.

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The screen is black and I cant get it to the safe

if you hear no beeps when you boot, you probably just have a bad video card or monitor, or your monitor cable may have come loose....answer back...

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Monitor goes to sleep and computer will not boot

If your monitor goes to sleep, how do you know it got to window xp screen ?

Sound like your stuck in a loop (bad boot sector). You might have to reinstall windows again.

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