After i boot compaq desktop it goes blank after the compaq logo,no fn button so no button commands some people say get you to bios does not work can someone tell me the correct commands or offer advice please.
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 500 times.
Re: compaq screen goes blank after power up?
When yo upower up press F! or F2 or "del" key to enter in bios then check your harddisk is detected? if your harddisk is sata then enable sata option in bios then save settings. If every thing is fine then it should be dispaly resolution issue. When yo upower up vthe computer press F8 key then enter in enable vga mode then go to control panel then dispaly proeprty-> settings ->change screen resolution to 1024*768 then restart .
Thanks for using fixya. Please rate this solution if it helps you.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hello, It sounds like your software is corrupted or your hard drive is out. Either way try this first:For a notebook, press and hold the Fn key and then press the power button. This starts the pre-boot testing and will launch ePSA. In case you have a Desktop at the Dell logo screen tap the F12 key to enter One Time Boot Menu and use the arrow keys to highlight Diagnostics and press enter. Some Desktops do not have an F12 key, to access the boot options you have to press the <0> (zero) key at the Dell logo screen.
do you still see the compaq logo and does it show you the windows boot up screen before it goes blank?
do you see anything on the screen at all after pressing the power button?
Check if the laptop is receiving power. If it has power and you can't see anything on the screen it could mean that the LCD assembly or the Video card of your laptop is bad.
If it goes to the compaq screen and then to windows logo before going out, try booting into safe mode and once there uninstall the video driver from the device manager because that means the resolution was set to something higher than the display could handle.
If it restarts after showing the compaq screen try reseating the memory, hard drive and wireless card of your computer put them one by one and try turning the compter on after each part you put back to check which component is point of failure.
Otherwise you have a bad motherboard and it may have to be replaced.
Hope this helps!
If the system will not complete boot, try the F8 boot menu and select safe mode and see if the system will boot to windows.
If the system boots to windows, you could have software issues or a startup item causing the system to hang at boot, try turning off the startup group items in MSCONFIG (Start, run, MSCONFIG) and see if the system will boot in normal mode.
If that is not help, hold the Fn Key while pressing the power buttong this should start PSA diagnostics on the system, see if any hardware fails
Remove the AC power (charger) and then take the battery out. Plug in just the AC power supply and turn the laptop on, see if it boots up and shows a display on-screen. If it boots let it boot up and then shut it down as normal. Reinsert the battery and try as normal. If you still get a blank screen can you then tell me if you get any post (splash) information like the Compaq Presario logo before it goes blank.
Try booting to the Safe Mode (F8 at boot) see if you get any further. Also, does the system complete boot (DO you hear windows sounds?) or is the system just hanging after the Splash screen (You can also try an external monitor and press Fn+F8 to enable the external display) If you can get video externally, then is it likely a LCD or video card failure. If you can't boot to the safe mode and you do not hear the Windows Welcome sound that normally plays at the desktop, then the system is not booting and you have either a hard drive failure and/or an operating system failure.
See if you can boot to the BIOS (F2 at boot), then reload the default settings and reboot.
If you suspect the OS is a problem, boot to the XP CD, then run CHKDSK /R and see if that helps
You can also run system Diagnostics by pressing Fn+the Power button
If you mean after the computer performs the self test the screen goes blank and stays blank, eventually turning off you are having a hard drive problem. When the computer boots you should see an E-Machines logo and/or a self test on the screen. That is done by the motherboard as part of every boot up. After that the motherboard passes control to your boot device and loads your operating system. If your computer stops booting at that point, your boot device is not working properly. That could be caused by many things - virus, hardware failure, power outage.
If you really mean you see nothing at all on the screen when you press the power button your computer simply is not working at all. Open the case, blow all the dust out of it and reseat all components you can, then try again.