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Re: on boot up lines appear looking like zip code bars
This is the problem with display memory which is on the vedio card or on the motherboard. you may try
1) change RAM memory on the motherboard and test, go next if not solve.
2) install the new vedio card (AGP OR PCI) if build-in vedio used before test again
3) change a vedio card if the vedio card(AGP or PCI) installed before
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Remove the battery and open the case. Look inside the computer with a flashlight to see if any of the capacitors are busted or leaking from corrosion. The capacitors look like little battery towers, but they are not as tall as the AA or AAA batteries.
If the capacitors are bad, your computer goes bunkers.
During the boot process press F2 in order to get into the bios settings. Here you will find "Integrated Devices" select this line with the cursor keys (up and down) and press enter (or spacebar). On the new panel locate the option "sound". It must be marked as ON state. With the cursor keys (left and right) or + / - change the state at OFF. Press escape to exit from this pane, and escape again to exit the bios. At the prompt panel that appears select "save changes and exit" and press enter. Your Dell is going to reboot now with the internal sound card in disabled state.
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My first check would be video drivers if this is a newly built computer. If it is a computer that has been running a while and the problem suddenly appeared I would reseat the RAM and attempt to boot into safe mode, suspecting a virus infection.
Most likely an issue with the Video Card or Video driver. * Boot to safe mode by tapping F8 while starting up the computer. Selected safe mode with the keyboard and hit enter. Login to your user account. You should see the words “Safe Mode” on all four corners, * Open device manager – Right click “My Computer” – Select “Manage” – Selected device manager from the left. Under display driver, you should see your vide card listed. Right click on it and select “Disable”. Now restart your computer and if this resolves the issue, then the vide card may be at fault. You could also try updating the video driver. Do let me know if you get this far.