Fasauceome

Does the boot behavior in the Inspiron change when only the SSD is installed, and not the hard drive?

I went on PCPartPicker's price history and saw no records for the Vertex GX 1000 or 1200, so this may just not be an item that was ever sold in the US. Consider these https://pcpartpicker.com/product/PJvqqs/seasonic-1000fx-white-1000-w-80-gold-certified-fully-modular-atx-power-supply-ssr-1000fx-white https://pcpartpicker.com/product/kDvD4D/corsair-rm1000x-shift-1000-w-80-gold-certified-fully-modular-side-interface-atx-power-supply-cp-9020275-na

Dell optiplex power supplies are generally not bad. You should have no problems with a 1650

the hard drives are only gonna be like 5 watts each. Get an SSD and it's like 3 watts so no issues there.

yes, should be fine. What CPU are you using? Can't imagine it's pulling more than 100 watts.

that's true but the difference may be imperceptible. @Jaw709 do you live in the northern or southern hemisphere? If these are the temps you're getting during warm season, you are probably sitting very pretty.

Nah, you basically said it already that if the CPU is not near throttling, lower temps won't help. Max of 76C is also a pretty nice and low operating temp in general.

I would not use the 1x2400. Ryzen is very sensitive to ram speeds, and a Ryzen 5 1600AF should be accompanied by 2x DDR4 2800 or higher

Yes, I think that would be a fine choice. Do you already have the 1x8GB and 1x16GB? What speed are they?

I agree but I couldn't find the same model in a lower wattage. If you do, and it's cheaper, it's a good choice

This might be the best one in your budget https://articulo.mercadolibre.com.ar/MLA-1727169858-fuente-de-poder-cougar-x2-750w-80-bronze-color-negro-_JM#position=5&search_layout=grid&type=item&tracking_id=ac20b368-63c0-43b6-bf01-e1cbae1c2a39 I often use this site as a reference for PSU quality because it's a good comprehensive spot for the info https://cultists.network/140/psu-tier-list/ That cougar unit falls in tier C and everything else I can find on Mercado Libre looks like tier F and lower, or too old to be on the tier list. It might be worth it to bump up your budget https://articulo.mercadolibre.com.ar/MLA-1422586285-fuente-de-alimentacion-asus-tuf-750w-gaming-bronze-80-plus-_JM?searchVariation=182522475341#searchVariation=182522475341&position=20&search_layout=grid&type=item&tracking_id=fa6783a8-b712-4d71-9ce9-b540c4692ac0

I looked up this teardown video I see one 2.5 inch hard drive slot and one M.2 slot

Did you try putting the graphics card in a different PCIe slot on the motherboard?

Make sure to quote us so we can see your responses @YoungBladeshared a pretty helpful guide, all you need is a USB stick and Gigabyte's copy of the BIOS from their website so I hope that's doable for you

Did you update the BIOS of the motherboard? I would guess the firmware is not up to date for this brand new CPU

Yeah I am thinking you might want to reach out to Corsair support and see about a replacement cable for this power supply. Their customer care is pretty good and they might replace your cables free of charge.

Are you certain that this power cable is original to this power supply? That 8 pin should absolutely go into the PSU.

I've been using a program called OpenRGB recently https://openrgb.org/ But gigabyte has Aorus RGB software that you could use to control the lights as well. Both programs are free so it's your choice. Some gigabyte boards have RGB control in the BIOS but I think it's AORUS motherboards only and the DS3H is one of the lower end gigabyte boards in terms of features.

building a keyboard is pretty niche so you probably won't be encouraged to do so unless you really want to. What is your budget and what currency?

yes, you will want to strip down the system outside the case to just CPU, ram, and motherboard with power supply to do the most troubleshooting you can.

HDD LED cables are not required for any function of the PC aside from the LED itself

on eBay compare prices on Ryzen 5 CPUs that you can get your hands on. Even first gen Ryzen like a Ryzen 5 1600 or even a 1400 is a big jump in performance. Used ram is a good idea, but new motherboards are not a bad idea. You can still get a new B450 motherboard for a good price https://it.pcpartpicker.com/product/Nh2bt6/msi-b450m-a-pro-max-micro-atx-am4-motherboard-b450m-a-pro-max

changing the CPU will require a motherboard change too, since you are still on socket FM2. Are you considering the used market? There are some pretty cheap Ryzen options that would be a pretty massive improvement.

do you have a friend or sibling's PC that could lend a power supply to test with?

there is a chance that the power surged while you were away. Is this PC plugged into a surge protector?