lines appear on my monitor

after leaving my pc on for a long time i get lines on my monitor and i cant see anything on screen so i have to restart the pc i only started getting this problem when i changed my graphics card does anyone know why this happens

 

Sounds like your graphics card is overheating, but then I'm not sure why it would fix itself when you restart.

 

put your original grfx card in and see what happens

 

my original card gave up so i bought a radeon 7000 how cdo i know if its overheating

 

Im not sure really. Mine has a programme that tells you what temperature it is, but a card as old as a Radeon 7000 probably won't (as my 9100 didn't). If your motherboard has onboard graphics try them and see if it happens.

 

try this not only is it freeware but it also monitors loads of stuff

 

I'm not sure that a Radeon 7000 has a fan (looking at this pic).

 

youre right it dosent but i removed the heatsink and put one on with a fan connected this worked fine for a couple of days but now i still get the same problem

 

try refitting the heatsink with the fan but this time apply a paper thin layer of thermal paste

 

And to add to what he said, be sure to clean off whatever's there first with some isopropyl alcohol first. Too much thermal paste will act as an insulator for the heat and give the opposite desired result.

 

Did this happen as soon as you got your new card or could it be that your monitor is broken? Try testing the monitor on another computer and another monitor on your computer.

 

does anyone think its easier and quicker to goet a new graphics card if so what would be best as i dont play games on my pc i just browse the internet and download stuff

 

do you konw where to get thermal paste from cheers

 

theres a few places, yor local computer shop probably won't stock any but i found this, this, and this obviosly the last one is the cheapest so i'd probably get that but i'm on a very tight buget, if you ever need to remove it use some isopropol alcohol (available from your local chemist (you will probably be asked to sign the poisions book, just tell them your going to use it to clean off themal paste off a CPU, also get some cotton wool buds to help you clean it off)

good look