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After new GPU installation PC won't last 2 seconds

nerdsmadeearth
By nerdsmadeearth
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So after installing my windforce r9 280x into my PC. My PC turns on for a second or 2 and turns off. All fans are spinning.  So i know its gettinf power. I did how ever not uninstall my Nvidia drivers from my old card. PC won't boot at all now. Neither GPU or no GPU at all. Wont boot. Someone please help!

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Posted

Did you clear cmos?

Main RIg Corsair Air 540, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

Spare RIg Lian Li O11 AIR MINI, I7 4790K, Asus Maximus VI Extreme, G.Skill Ares 2400 32Gb, EVGA 1080ti, 1080sc 1070sc & 1060 SSC, EVGA 850GA, Acer KG251Q 1920x1080@240hz

 

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4 minutes ago, nerdsmadeearth said:

So after installing my windforce r9 280x into my PC. My PC turns on for a second or 2 and turns off. All fans are spinning.  So i know its gettinf power. I did how ever not uninstall my Nvidia drivers from my old card. PC won't boot at all now. Neither GPU or no GPU at all. Wont boot. Someone please help!

The drivers have nothing to do with it if it's not even POSTing.

As the above poster suggests, clear your CMOS. If that doesn't help, try a different power supply, you might've fried your current one.

Sig under construction.

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6 minutes ago, Mick Naughty said:

Did you clear cmos?

Clearing CMOS on this Mobo is weird. My PSU is 750w 150 over the recommended w 

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2 minutes ago, nerdsmadeearth said:

Clearing CMOS on this Mobo is weird. My PSU is 750w 150 over the recommended w 

Still, try it!

 

And the wattage rating isn't all that matters...

Sig under construction.

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what power supply is it?

what was the old card?

is the 280x a good card ( used )..... where did it come from"

did you try it in another machine?

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8 minutes ago, nerdsmadeearth said:

Clearing CMOS on this Mobo is weird. My PSU is 750w 150 over the recommended w 

What PSU do you have?

 

Less than reputable brands like to fudge their numbers by stating that as the peak wattage at ridiculous temps like 30C which causes a sharp drop in actual true peak wattage.

That's not even including everything else like rails, ripple, etc...

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I have a EVGA supernova 750w PSU, card was used but was currently in a PC working and everything. I restarted the cmos. PC turns on. All fans spin. My keyboard and mouse don't turn on and there is no video output.  Anyone got ideas?

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Ensure that there aren't any loose screws or similar shorting the system out.

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with your reluctance to post the hardware requested i have to assume the motherboard is bricked. good luck.

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