Hp dv9000 switches on to show coloured lines on screen.

It is pretty much junk, sorry to say it but your picture tube went out and it is cheaper to buy a new t.v. My grandpa use to fix them for us for free but he passed:( If you call some where see how much they would charge for a picture tube, I bet it's expensive???

1.Have you tried another power adapter and or battery?

u better remove ur ram and reinsert in slot if you have two rams in mother board please take out one ram from one slot and check if it same take out another ram from slot and check it

Due to the overheating issues with the dv9000's it's more than likely the motherboard has gone bye bye. You can try plugging your laptop to a regular desktop monitor to see if it's the screen; but you would have heard it chime on if that was the case. Unless you had your volume muted before the incident. Try checking the RAM (one by one), then remove the hard drive and see if you see any graphics. If none of those work, prepare for a dv9000 funeral or punt!

The inverter is to change the volts from the laptop to the Backlight. This wont have anything to do with it.
Im more than certian it will be the LCD cable. Proberly loose or torn at where the lid closes.
Hope this helps.
James

1. perhaps LCD is faulty
2. Software reload may also solve the problem if LCD is OK.

This is caused by burn out of the Nvidia graphics chip on the motherboard. You need a new motherboard. This is due to a design flaw (the subject of a class action against HP in the USA). I have had two motherboards fail on me in this way so far - do not expect any worthwhile support from the HP "support" people they are all in India and can hardly communicate outside of their simple repetative scripts. Its impossible to escape them - I tried communicating with head office but all you get is contact details back to the incomprehensible Indian call centre. I strongly recommend against ever purchasing from HP again.

You just need to diable presentation mode.It's not the switch.

i have the same dvd player the pink 1 i lent on a button and it went into black and white i have tried everything and can't seem to get it back into colour again, ive tried pressing all the buttons and nothing seems to work or come up with any black and white/ colour options :(

Same problem with an older JVC player. One end of the S-video cable was loose. Pushed in in tight and everything ok again. Cheap fix if it works for you.