Hi. Forgive me my bad english, I'm not native english speaker. I used search but didn't find anything useful. First of all, specs: Motherboard P965 neo Graphic card ATI X1950 Pro PSU Antec NeoPower 430 RAM Kingston 2Gb DDR2 X2 Corsair 512Mb DDR2 X 2 CPU Intel E6400 dual core Monitor Asus VW221 As you can see, computer is at least five years old. This problem started in much smaller case about a year ago. When temperature rised too high e.g. when playing counterstrike or Morrowind, monitor suddenly went on standby mode, first saying "VGA no signal". Too high being about 65-70C. Sound continued playing like nothing didn't happen. Well, I used underclocking as a temporary solution. With underclocking temperature stayed under 60C and all was fine. Slowly problem get bigger, and I haven't been able to play cs anymore in last few weeks or so. Being student, I haven't had dough to build better computer and so I thought I'll wait until I have more money and then build a new comp. from a scratch. But few days ago, I left comp. on over night and when I woke up there was a blue screen in monitor. I rebooted it, few hours passed and monitor went to standby giving VGA no signal. That was new because there wasn't any "stress" on it, there wasn't any programs running. Problem got bigger, and now when booting computer it monitor just says VGA no signal and goes to stand by. It doesn't even show starting screen so I can't access BIOS. I've tried monitor with other computer, it works just fine. I've taken off all unnecessary appliances from back of the computer. I've reseted CMOS, booted with every single RAM itself, reseated graphic card and cleaned it, reseated all cables. There is no onboard video card in my mobo so I haven't been able to try that. I have no possibility to try my graphic card or PSU in other computers. I assume that problem is either PSU or graphic card. I planned to get a cheap temporary graphic card or PSU until I have money to build better computer. But is the problem graphic card or PSU. Or something else. Sorry about long story but I didn't know what's necessary and didn't want to leave anything important out. I really appreciate all answers and I want this problem solved. Thank you.