[SOLVED] Connecting PCIe cables to GPU whilst PC is running ?

[Kenai07]

my specs:
windows 10 64bit
gpu: gigabyte rx 5700 xt (no dual bios)
cpu: i3-10105F (doesn't have integrated graphics)
motherboard: gigabyte H410M S2H V3 (1 gpu slot)

i failed in gpu bios flash, now with pcie cables plugged into it, gpu fans spin, there is no image on the monitor and sound, and it doesnt boot to windows.
with pcie cables not plugged into it, gpu fans dont spin, there is no image on monitor but there is sound and it boots to windows.
then when i try to run blind amdvbflash -i, in cmd it says that adapter not found.

my question is, will something bad happen if i connect pcie cables into gpu whilst Windows is running ?

 

[DRagor]

my question is, will something bad happen if i connect pcie cables into gpu whilst Windows is running ?

You can damage GPU or motherboard or PSU. Or all of them.
Anyway it won't work. Once the system passed POST powering the card will not change anything, it will still be not recognized by Windows and so flashing it will still not be possible.

How about finding GPU repair shop? Since flashing the card does not take much time they should be able to do it for relatively cheap.

 

[ohio_buckeye]

Why were you flashing the card to begin with? If a repair shop isn’t an option, I know I’ve seen used 5700xt cards on eBay in the USA reported as being sold refurbished from Asus for $175. Though I recently got a used 5700xt from a miner for $140. So deals are out there. Might also check into a 6600 or 6600xt.

 

[Kenai07]

You can damage GPU or motherboard or PSU. Or all of them.
Anyway it won't work. Once the system passed POST powering the card will not change anything, it will still be not recognized by Windows and so flashing it will still not be possible.

How about finding GPU repair shop? Since flashing the card does not take much time they should be able to do it for relatively cheap.

my motherboard has 2 PCI Express slots, x16 and x1, if i would buy Kolink Riser PCIe x1 - x16, and connect rx 5700 xt to riser and riser to that x1 on my motherboard and my gt 1030 to my motherboard, would it work then? i cant plug rx 5700 xt into motherboard cuz it covers that x1 on motherboard

 

[DRagor]

my motherboard has 2 PCI Express slots, x16 and x1, if i would buy Kolink Riser PCIe x1 - x16, and connect rx 5700 xt to riser and riser to that x1 on my motherboard and my gt 1030 to my motherboard, would it work then? i cant plug rx 5700 xt into motherboard cuz it covers that x1 on motherboard

It should work as long as you get a proper riser (something that looks like this)

However, a piece of warning here: it is possible (although rare) that your VBIOS flash attempt failed in such bad way that you would not be able to make system POST with 5700 installed at all. If that happens your only option is repair shop as they have ways to flash VBIOS without putting GPU into PC.

 

[Kenai07]

It should work as long as you get a proper riser (something that looks like this)

However, a piece of warning here: it is possible (although rare) that your VBIOS flash attempt failed in such bad way that you would not be able to make system POST with 5700 installed at all. If that happens your only option is repair shop as they have ways to flash VBIOS without putting GPU into PC.

this, https://www.conrad.com/p/kolink-riser-cable-pcie-x1-x16-riser-cable-1604932

 

[DRagor]

this, https://www.conrad.com/p/kolink-riser-cable-pcie-x1-x16-riser-cable-1604932

Seems to be lower quality product. However since you plan to use it just once I guess it will do too.

 

[Kenai07]

Seems to be lower quality product. However since you plan to use it just once I guess it will do too.

nvm, im going to buy this one, https://allegro.pl/oferta/najnowszy-riser-usb-3-0-pci-e-1x-16x-009s-ver103e-11295732654 ,

 

[Kenai07]

pc wont boot to windows with connected rx 5700 xt(power cables and pci-e), and gt 1030. pc will boot to windows with gt 1030, and rx 5700 xt connected with only power cables, 8pin and 6pin, but not to pci-e. if i start pc with power cables connected to rx 5700 xt, but not to pci-e, and at windows connect to pci-e, will something bad happen? will it work like shortening bios chip?

 

[DSzymborski]

Most consumer motherboards don't support hot-swapping of PCIE. They can but it needs hardware and BIOS support which will almost never be there.

Various hot swaps are not your shortcut out of this.

 

[DRagor]

pc wont boot to windows with connected rx 5700 xt(power cables and pci-e), and gt 1030

That means you got worst possible result - your flash attempt went so bad that the board hangs on while trying to communicate with board at POST. Your only choice here is repair shop unfortunately.

 

[ohio_buckeye]

Realistically as well, not knowing where you are from, but in the USA you can get a 5700xt on eBay used for around 150-170 bucks. You might be ahead to just buy another card. A shop may charge a diagnostic of say 40 bucks and 75 bucks an hour or something like that. Depends on how they work.

 

[Karadjgne]

If shopping at allegro.pl, it's pretty certain Op is not in the US, but much closer to Poland.

Op, right now that card bios is bunk. It needs professional help to hard flash the bios. That cannot be done by the average user as they do not own the equipment to do so. Trying to shortcut by hot-swapping does not work.

To do so generally requires either removing the bios chip from the board, where it can be directly plugged into other equipment that can force a bios hardcode, not through the pcie slot.