I have a HP Pavilion d4790y desktop. This morning the screen was all lines of colors that would not go away. I reset, unplugged and shut off the computer. The problem resolved for a short time, and then came back. Any idea what's wrong?

have you tryed starting up in safe mode to see if you can get into your windows?

check the RAM of the system

Shut down, unplug from AC, wait 30seconds or so, plug in , reboot. If that fails try a systen restore: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c00814731&lc=en&product=3856269

you did not remove your static from yourself when you changed the ram. So you fried your motherboard.

The Beep codes indicate an error. Look here to diagnose further.

Try a different monitor.

remove the ram( memory) and clean with a dry cotton cloth and make sure to insert it properly and after the first display go to setup useing f2 or f10 depends on the laptop model and load the deafualts. i think this may do the job

Just match the color of the male and female on each end. Plug the audio cable (mini stereo phone plugs) to the PC audio line out (green miniphone jack) to the Powered speaker mini stereo phone audio line input jack (green color jack). You will have to set the volume controls of the speaker control knob and at the PC on screen volume control panel.

Yes it needs a power supply. You can get a cheep one on eaby or get one off of the HP site

Hope this works,

Luke Wilcox

You are not alone with this problem. Some lines (like mine) run vertically rather than horizontally. The solution - sue HP. These screens have a known fault ie the Nvidia graphics chip is known to be the culprit. The company knows all about this issue but expect us to pay to put it right - sue them, you can do it online for around £35 (UK).