Why does the computer restart after installing a video card?

Question

Video cards

The video card worked, everything was OK. Once I turn on the PC, and she tried to turn on for 30 seconds, showed nothing and rebooted the PC. So it still doesn't work. The situation is the same - 30 seconds black screen and reboot. What could be the problem?

Answer 1

Maybe the power supply does not pull due to wear of the elements, maybe the contacts are oxidized on the RAM, video card, hdd, maybe the BIOS battery is dead, I would start from the last one, turn off the power of the PC from the outlet, recharge it by pressing the power button, remove the battery, close the contacts of the installation slot batteries for a minute, remove the screwdriver and start the PC, if it does not help to clean the contacts of the connected devices with an eraser, before cleaning, disconnect according to the previous disconnection scheme