Shreyasb

Try doing bios flashback May be ur bios as been corrupt

Yes it comes with integrated GPU .I think you have built a nice build. But is 500gb enough for u .Because nowadays program size is increasing so I would get 2tb Seagate barracuda additional .

Durability is the same but this gigabyte supports more frequency than MSI motar But this has been improved in MSI motar Max https://www.msi.com/Motherboard/B450M-MORTAR-MAX/Specification

3400g limits maximum ram speed to 2933 MHz so any mobo will do But I would suggest MSI mortar Max because for its better vrms and out of the box 3rd gen support

I would say get new motherboard b550 when it is launched because be b350 many not any more bios updates And get ssd bro

Usual a single stick in ddr4_2 slot And remove the CMOS battery for 30s and try to boot it.wait for 5 - 10min Motherboard bios should be good Ryzen 3200g is practically second gen but the bios came when 3rd gen ryzen launched so don't worry

I would say check your storage And underscore in black screen is usually indication of no memory Do these steps first Try reinstalling all the storage devices properly(check data cables,sata power,M.2 connector) U have said u have 16gb of ram is it a single stick or 2 sticks,If it is 2 stick which dimm slots have used

If u really want very cheap PSU then go with VS450(2017) This is not recommended but for very cheap build u can go It is not a fire hazard like other cheap PSUs

Ya would have but u have very bad PSU which may not able to run it properly

PCPartPicker Part List Type Item Price CPU AMD Ryzen 3 3200G 3.6 GHz Quad-Core Processor $94.99 @ Amazon Motherboard MSI B450M PRO-M2 MAX Micro ATX AM4 Motherboard $74.99 @ B&H Memory G.Skill Aegis 8 GB (1 x 8 GB) DDR4-3000 Memory $34.99 @ Newegg Storage ADATA Ultimate SU800 256 GB 2.5" Solid State Drive $39.99 @ Amazon

I would say at this budget going With Apu makes sense

There is bro ,Maximum limit for shared memory for graphics depends on the mother board. Like Asrock b450 pro4 limits shared memory to 16gb MSI b450 M2 max limits it to 2gb I think asus b450m k limits it to 4gb I think

Happy to help.

I think 240gb should be enough I think you can go with adata xpg sx850 it the cheapest ssd with dram cache which i found today Crucial Mx500 are good I would not go with bx500 As u are in budget I think sata is ur only option. Going m.2 would be nice but it will be slightly priced high and also u need ur motherboard to support it . Performance is similar in both the ssd so don't worry. Hope this helps You bro

Then there is no way that I know of to connect an external GPU bro