new build wont boot up from cold

barbel · 6 Dec 2021 at 16:38

i have just built a new pc which from cold wont boot up but all the fans come on but no pic or anything and wont let me go into bios either .
but if i use a usb stick (bootable) i can get into bios and check boot sequence is ok and exit and save and it boots ok .

also once its booted up ok i can turn it off and it will start normally

any ideas why , i did think m/b battery but settings are how i left them or perhaps i should wipe windows of and start again

barbel · 6 Dec 2021 at 21:09

mickyflinn said:
Update the motherboard bios.

i have tried that now and for some reason it wont or cant see the file in m flash and i have checked i have the right one several times

barbel · 6 Dec 2021 at 21:32

mickyflinn said:
Did you format the usb drive to fat 32 , some bios files need renaming check the manufacturers guide for bios flashing.

I have done all that yes scratching head reakky

barbel · 6 Dec 2021 at 22:10

mickyflinn said:
What motherboard do you have ?

its an msi b550 gaming edge wifi ,

i must have downloaded the update 4 times and the 5th time it worked in same usb port and on same pen so updated now so will see tomorrow if its worked maybe conflictind m_2 with other drives if not , will update later

barbel · 6 Dec 2021 at 22:47

mickyflinn said:
What motherboard do you have ?

Right after bios update I shut down computer left it for 10 mins and restarted OK but when I tried again in 30 mins it won't start it doesn't even get to bios post

barbel · 7 Dec 2021 at 16:21

mickyflinn said:
@barbel any progress ?

Will try again tonight going to put in an old SD with windows on and see if it boots

barbel · 7 Dec 2021 at 19:24

Right fiddled tonight cleared cmos no change
I put new gpu in old machine that works OK
I put old gpu in new machine and that boots up OK so I have a conflict with new gpu and new build any ideas

barbel · 7 Dec 2021 at 20:35

It's the 1000w version

Quartz said:
Which version of the Straight Power 11 do you have? I wonder if it is insufficient.

It's the 1000w version

barbel · 7 Dec 2021 at 21:09

I have just tried my old psu which is a 1000w also and no go so it's a conflict with something

barbel · 7 Dec 2021 at 22:17

boabs said:
reseat the cpu

But the computer works OK with my old gpu and starts shuts down and restarts OK it's only when I put in the new gpu

barbel · 8 Dec 2021 at 12:00

Syore said:
Tried changing the GPU power cables?

Also it could be your GPU is heavy and its sagging, causing improper connections to the PCI-E slot. You probably need a GPU sag bracket.

When I used mun of PSU I plugged in GPU CPU and motherboard so not cables.
I have used it with computer laying down so shouldnt be sag

barbel · 9 Dec 2021 at 07:14

Dg834man said:
Try setting pcie to 3 instead of auto then swap back to the 3070

I have decided be that and a different slot it's strange as my old GPU works in new build and new GPU works ok in old build just not all together in new build

barbel · 10 Dec 2021 at 06:13

Dg834man said:
Is your bios set to csm or uefi? Should be uefi

Yes its set right

barbel · 10 Dec 2021 at 06:17

It's all working now after several days of stress it was a windows update that caused it to behave like that apparently in some cases it believe a USB keyboard is a pen drive and tries to boot that once I got in bios and disabled all boot options apart from my m2 carg it works ok so happy days

Thankyou for everyone that helped me along this journey much appreciated