I was having problems with my video shaking then wthe last time i got it to come up the desktop was all messed up. Now it starts to come up it makes it to the windows splash screen then the monitor says no signal and the power light stays on but the hard drive light has no activity.
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There are several reason why a computer won't boot up. First you need to figure out if your Power Supply is working, if your not a computer expert, you can try another PSU to test. Or you can use a PSU tester to test if your PSU is still working. If not, clean and reseat your RAM, if you have 2 RAMs, remove each RAM then try 1 RAM at a time, and try to seat the RAM to different slot. If not luck, clean and reseat your graphics card. If you have a built-in video port, remove your graphics card. Still won't boot? try resetting the CMOS. This might fix the problem.
Hook a spare monitor to the video output usually on the back, if okay! the problem is in the LCD display, if symptoms are the same, you may have a virus, update definitions and run a deep or full scan of your system, if nothing shows, try a system restore and bring the computer back to an earlier time before this happened, if still no result! run a full recovery of the operational system to factory settings.
1. Have you tried replacing your video card? If you have a back up video card use it temporarily and check if the display is still shaking. 2. How did you check your power supply? If you have digital tester then check the output voltage from the power supply connector, the yellow should read 12v and the read is 5v. If the readings is below the said standard volts, then its not stable, and you will need to replace it. 3. Last to check is the cord you are using to connect your monitor to the video card, If you have available, try also replacing this.
Possibly it is a video driver problem. Try entering boot menu by pressing the F8 key at startup, and first of all try with "Boot in last known working configuration". If it doesn't solve the problem, retry booting in safe mode and change the video resolution to 640x480 VGA. This will look horrible, but if it lets you reboot and login as Administrator in normal mode, you will be able to reinstall the video drivers from Dell (either the CD-ROM or the web site). At that point you will be able to raise the resolution again.
If it still doesn't work you might need a recovery install of XP, which sometimes messes with some programs' configuration.
1) First try to go into the control panel under display and try a different resolution. Or try to adjust the display on the actual monitor. If this does not help try Starting the Last Know Good Configuration.
2) The Last Known Good Configuration feature is a recovery option that you
can use to start your computer by using the most recent settings that
worked. The Last Known Good Configuration feature restores registry
information and driver settings that were in effect the last time the
computer started successfully. Use the Last Known Good Configuration
feature when you cannot start Windows XP after you make a change to
your computer, or when you suspect that a change that you just made may
cause a problem.
How to start your computer by using the Last Known Good Configuration feature
To start your computer by using the Last Known Good Configuration feature, follow these steps:
Start your computer.
When you see the "Please select the operating system to start" message, press the F8 key.
When the Windows Advanced Options menu appears, use the ARROW keys to select Last Known Good Configuration (your most recent settings that worked), and then press ENTER.
If you are running other operating systems on your computer, use the ARROW keys to select Microsoft Windows XP, and then press ENTER.