Computer won't turn oon wtf?!??!?

Okay so the first time i try to download over night it shuts off, i try again and it shuts off. Andnow whenever i turn it on...I see the fans moving, and the green light on the cd disk thing but the Graphics card isn't on i don't think because the fan isn't moving but yet theres a 2 red lights on it. There are red lights on the motherboard. And the fan for the cpu in't moving. And ontop of that the monite displays nothing but a NO DVI or VGA or w.e and it stays black and goes from the blue button to orange as in standyby im guessing. WHATS HAPPENNING? When i viruesd checked i had a trojan but i removed it! Whats going on please someone please help me! I've only had this computer for a week and i spent 1k on it. My specs are

Gigabyte P45, Hd4890, Q9400, 4gb Ram and A cm690 motherboard oh ya and 320Gb Hard Drive.

Okay so the first time i try to download over night it shuts off, i try again and it shuts off. Andnow whenever i turn it on...I see the fans moving, and the green light on the cd disk thing but the Graphics card isn't on i don't think because the fan isn't moving but yet theres a 2 red lights on it. There are red lights on the motherboard. And the fan for the cpu in't moving. And ontop of that the monite displays nothing but a NO DVI or VGA or w.e and it stays black and goes from the blue button to orange as in standyby im guessing. WHATS HAPPENNING? When i viruesd checked i had a trojan but i removed it! Whats going on please someone please help me! I've only had this computer for a week and i spent 1k on it. My specs are

Gigabyte P45, Hd4890, Q9400, 4gb Ram and A cm690 motherboard oh ya and 320Gb Hard Drive.

RedxSniper

D1601 - Red LED On, shows critical temperature fault

D1602 - Red LED On, shows External power connector A was removed

D1603 - Red LED On, shows External power connector B was removed

D601 - Red LED On, shows critical Core power fault

These are from game.amd.com Radeon Forums.

As for the two lights on your motherboard, you may want to check the manual for that. Also, what power supply do you have?

Do yo have a speaker hooked up to your motherboard, are there any beeps coming from the board when you turn it on?

Use a multimeter (measures voltages) to check your PSU. They're about ten dollars at local car parts stores. But if your fans aren't spinning on your GPU or CPU, DO NOT attempt to run your computer.... Check your PSU. If it's good, you probably have a faulty motherboard. As for the trojan, a hacker could've easily caused all of your problems.... How did you get a trojan on a new computer so quickly?-GeordiLaForge-

70% is too high for that card, 45% should be the max.

dunno about the shuting off part but my pc use start without the screen showing anything and i remove the vid card and put it back in and it started working againzahyr

do this and also make sure everything else is seated correctly and pluged in.

I put it at 70% when under load. Like when playing a game.RedxSniper

thats still too high 45% should be the max fan should get you 55-60c which is fine.

I think something is overheating, if you can get far enough, check your temperatures. If you are able to bootup then the motherboard is fine. The GPU or CPU is either overheating due to fan failures, or your power supply is faulty. Chris_53

Core 2s are good at dropping their voltage and ultimately shutting themselves off if they get too hot. We built a machine for my friend and he accidently used the wrong screwes for the retention bracket on his heatsink. He was supposed to use the flat screws but he used the ones with a slight radius to them, the result was it looked like the heatsink was installed right but, in reality it was sitting a mm or 2 above the integrated heat spreader. The computer wouldn't stay on very long and then it would just shut off. I finally got into the BIOS and saw that the motherboard was reporting a temperature of 100+ degress celsius. I immediately shut it off and we reinstalled it, worked fine since then.

I think it may be a CPU or RAM instability. I recommend Prime95, and Memtest+. I would also look up the timings and voltages for your RAM online and punch those in manually.