Connecting Power supply to multiple things when i put the video card on comp started rebooting?

Answer 1

Is your power supply up to the task? it doesn't sound like it. Here is a list to help you decide.
Power supply requirements

component Wattage
MOBO------------------------------------------------ 15 to30
Low end CPU--------------------------------------- 20 to 50
Mid to HI end CPU--------------------------------- 40 to 100
RAM ---------------------------------For each 128mb--7
PCI cards-------------------------------------------- 5 to10
Low to mid graphics cards------------------------ 40 to 60
Hi End graphics cards----------------------------- 60 to 100
HDD--------------------------------------------------- 10 to 30
CD and DVD drives--------------------------------- 10 to 30
Add all of your components and compare to your power supply.you need about 50 to 100 watts more than your components use.

Answer 2

Yep, sounds like your power supply is overloaded and you need a higher capacity one. This is especially common for people upgrading to high-end PCI-Express video cards (which draw a lot of power)

Answer 3

Sounds to me like your power supply is not up to snuff. if you have a 300 watt go with a 350 or 400 watt.

Answer 4

Try booting in safe mode, if that works you have a driver problem.

If that does not work you may have a bad power supply

Answer 5

Check for a short, if nothing is obvious, unplug everything except the hard drive and try to start, then conect one item at a time, and see where your problem is

Answer 6

If your computer is not working properly while you are working on it, it could be a problem with device drivers, hardware or software.
Detailed instructions at http://tinyurl.com/yk5zpr