New psu / gpu pc wont start

brendonp

brendonp

brendonp

Associate
Joined
19 Nov 2014
Posts
73
Gigabyte Z370P D3 MOBO
Super Flower Leadex III 550W 80 PLUS Gold
Intel Core i5 9400F 2.9ghz
Vulcan T-Force 16GB (2x8GB) DDR4 PC4-19200C14 2400MHz
Zotac GeForce GTX 1060 Mini 6144MB GDDR5

Recently upgraded my psu to 850w and a Radeon 6700xt when all connected pc won't start could this be faulty psu or gpu can I unplug the gpu and try booting up would this work? Both items brought on ebay.

Many thanks
 
What happens exactly when you try to boot? Is it completely dead, or do the fans start and it boots to a black screen?

Can you take a pic of the inside?

Did you update the BIOS prior to installing the 6700 XT?

Do you still have the 1060 Mini?
 
So nothing happens when I boot no fans or nothing. My old psu has a vga slot not a pci which the new gpu uses do not sure I can run it off the old psu.

Old psu and gpu still works I didn't upgrade the Bios I will do that later.

Both 850w and gpu are new so I haven't tried them before.

I'm thinking of trying to boot without the gpu connected later
 
Last edited:
What make and model is the new psu? Even though the Superflower 550w is has a sticker saying VGA for graphics card power it is still pci-e as this has been the standard format since long before that Superflower was built so it will power that 6700XT. If the new psu is also modular you are not trying to use the Superflowers cables with it are you? That would be very bad and potentially expensive. Always use the cables that came with the psu even though it means you have to cable manage again.
 
Last edited:
Corsair RM Series RM850 850 Watt 80 PLUS Gold Certified Fully Modular PSU I did originally try the old cables only once. Have I ballsed it you think
 
brendonp said:
Corsair RM Series RM850 850 Watt 80 PLUS Gold Certified Fully Modular PSU I did originally try the old cables only once. Have I ballsed it you think
Click to expand...
Which cables did you try to re-use? Corsair and Superflower aren't pin compatible AFAIK so there is a chance you've killed it (and/or other components!) :(

edit: wait, just noticed you said the old PSU and GPU still work, have you tried them since you originally tried the new parts?
If so you may have got away with it......go back to original config and check that still works, then just change one part at a time (and ONLY use the cables provided with the PSU in use at the time!)
 
Last edited:
brendonp said:
Corsair RM Series RM850 850 Watt 80 PLUS Gold Certified Fully Modular PSU I did originally try the old cables only once. Have I ballsed it you think
Click to expand...

Sadly you may have made a expensive mistake and fried something. If the old psu and gpu still works then you may have fried the new gpu. Never, ever use cables that are not for the psu that you are using. You have to do some fault finding now so start with the old psu with it's own cables and the old gpu in the pc and make sure they are running ok. If so then take out the old gpu and insert the new gpu (power off at the wall when doing this). If the new gpu works then swap gpu's again so that the old one is back in the pc and then try powering the pc with the new psu and it's own cables. No boot means the new psu needs replacing.
 
You must log in or register to reply here.
Back
Top Bottom