Bios corruption

[YovRex]

Hello, well the problem that im facing is hard to explain but ill try to simplify it, well i have an HP Prodesk 490 G3 MT business pc and the problem started when i updated my nvidia rtx 3050 the screen resolution changed to 640x480 and couldnt change it so i tried to roll back to the previous update but didnt work and tried to frechly install the update but still the same thing so i restarted my pc when i got surprised that i dont see the hp logo nor accessing my hp setting with esc button and i only see a white dash until the windows boots so i tried to reinstall windows luckily i did but nothing changed and the weird thing is that the windows shows the old windows 7 installation startup with old bar in the middle of the screen can please someone help me

[DGroves]

this system only has a 300 watt power supply as such it most likely lacks a dedicated "GPU" 6pin power connector

if so you can only use video cards that draw 70 watts or less from the PCI-E x16 slot

next is the bios itself, i suspect this older system is a non UEFI enabled bios and therefore can only support older "Legacy" video cards that use the older bios this means that nvidia 7 series cards such as the 730 or oem 740 will work but the newer nvidia 3050 will not as it's a UEFI enabled video card

i suspect you booted into the Intel CPU's onboard 530 video display when the 3050 card failed to work which is why you got the 640x480 resolution as you never installed the intel 530 video drivers so windows defaulted to the stock VGA driver which is only 640x480

https://www.pocitace24.cz/user/documents/upload/manuals/HP%20490%20G3%20MT.pdf

your best bet if you can afford it is to look for a HP z240 MT  (not the z230, or the 240 sff models!!)

they are rather cheap now on ebay (and can be modded to run win 11)

or a lenovo p520c which is also win 11 compatible