How would I go about changing my power supply.

[JoshCost]

I don’t exactly know how to upgrade my psu. I have a 400 watt right now. I think my motherboard name is Erica.

[NonSequitur777]

@JoshCost,

Welcome to our HP User Forum!

Your HP Pavilion Gaming Desktop PC TG01-1070m CTO as fitted with an Erica motherboard, according to: https://h30434.www3.hp.com/t5/Desktop-Knowledge-Base/Power-Supply-Cross-Reference-for-specific-model..., is compatible with the 500-watt HP L05757-800 power supply.

These power units are expensive, you'll have to search online to see where you can get the best deal, such as here: hp l05757-800 power supply: Search Result | eBay.

Link: c06504786.pdf (hp.com)

Swapping your power supply with an L05757-800 is pretty straightforward: (2007) Removing & Replacing Parts | HP Pavilion Gaming TG01-000 | HP Computer Service | @HPSupport -....  Please note, some Users have mentioned that they were only able to secure the L05757-800 with one screw.  I don't know if that is applicable to your specific PC, but if securing the power supply is an issue, use self-adhesive Velcro tape to keep things in place.

Hope this was helpful.

Kind Regards,

NonSequitur777