Okay, you have a budget of ₹38000. I see two potential paths, one aimed at adding a discrete GPU later and a complete system now.
To upgrade later I would select a Ryzen 5 2400G with Vega 11 graphics. The Vega 11 is a little bit stronger than a GT 1030 but not as strong as a GTX 1050. It will allow you to game at lower settings for most games.
http://www.tomshardware.com/reviews/amd-ryzen-5-2400g-zen-vega-cpu-gpu,5467-8.html
The up side here is that it gives you a CPU that is almost as strong as a Ryzen 5 1600. Then at a later date, hopefully when GPU pricing settles down, you can purchase a strong GPU like a GTX 1060 or an RX 580. This path will lead to a system that will game well and edit/render well. Otherwise if you go for a complete system now then you get a system that will game okay but be horrible for editing/rendering.
As far as the mobo, this link states that you will be able to boot so that you can upgrade the BIOS.
https://www.asrock.com/MB/AMD/AB350%20Pro4/index.asp#CPU
Went for 16GB of RAM, this will be needed for editing/rendering. If you need to lower the cost then you could just get 8GB, just keep the RAM speed at 2933 MHz or more. Then you could add more later.
Links to the local online vendors are below the build.
2400G Build
PCPartPicker part list:
https://in.pcpartpicker.com/list/G62FTB
Price breakdown by merchant: https://in.pcpartpicker.com/list/G62FTB/by_merchant/
CPU: AMD - Ryzen 5 2400G 3.6GHz Quad-Core Processor (₹12975.00)
Motherboard: ASRock - AB350 Pro4 ATX AM4 Motherboard (₹7175.00)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive (₹3100.00)
Case: Corsair - 100R ATX Mid Tower Case (₹2840.00)
Power Supply: Antec - 500W ATX Power Supply (₹2850.00)
Other: ADATA XPG Z1 DDR4 3200MHz 16GB (2x8GB) 228-Pin PC4-19200 Desktop U-DIMM Memory Dual Retail Kit Red (AX4U320038G16-DGZ) (₹14850.00)
Total: ₹43790.00
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-02-21 20:24 IST+0530
https://www.theitdepot.com/details-AMD+Ryzen+5+2400G+with+Radeon+RX+Vega+11+Graphics_C30P29751.html
https://www.theitdepot.com/details-ASRock+AB350+Pro4+AMD+AM4+Socket+Motherboard_C13P29187.html
https://www.mdcomputers.in/memory/ddr4-memory/adata-xpg-z1-16gb-ddr4-dram-ax4u320038g16-dgz.html
https://www.theitdepot.com/details-Corsair+Carbide+Series+100R+Mid-Tower+Case+(CC-9011075-WW)_C5P24192.html
https://www.mdcomputers.in/storage/internal-hdd/seagate-1tb-barracuda-st1000dm010.html
https://www.mdcomputers.in/smps/antec-500-watt-vp500pc.html