PC crashes after installing new graphic card

john_tog

Reputable
Feb 5, 2016
1
0
4,510
Hello guys. recently i bought nvidia geforce gt 730. i have installed all drivers but i come up with a weird issue. Everytime I turn on my pc, after 30minutes or 1 hour my screen crashes and I am forced to restart my pc from the button. It happens suddenly whenever i see a video, playing a game or even when doing nothing. I tried re-installing drivers and even reseting windows but it hasnt been fixed... Also, I can update my drivers, but everytime i try to install them nothing happens and there are still the same. I dont know what kind of problem it is , so please help me.
P.S. i dont know a lot about temps, powers issiues , bios etc,so please be specific and explain in simple ways
 

holyprof

Distinguished
Dec 16, 2011
566
0
19,360
90% of the cases with the problem you described are due to underpowered power supply unit (PSU). It might even be rated for high enough power but is a cheap unit with untrue markings or an old unit with aged capacitors.

Please post your system descrpition with power supply brand, model and power ratings. Knowing the CPU, motherboard and quantity of RAM sticks and hard disks helps as well.

Here's an example of a PSU label. Please let us know what's on yours.
GeForce7800GSoc.jpg


Just a quick look on it will reveal it's a cheap unit with overrated output markings.
It can only supply 216W on the 12V rail (where is the 99% of the power needed by any post year 2000 PC) but boldly advertizes 400W instead. I'd be surprised if it could supply even 150W of clean and stable power.