How to sort out overstay issue with immigration?

You will either have to go to Immigration and pay the overstay fee and then leave the country and get a new visa or leave the country and go to Nigeria on a visit and get another visa and when you arrive change it to a resident's permit.
Are you sure you actually need a visa if you ate Nigerian? I thought travellers from ECOWAS countries can travel without one. You need to check

You will need to pay a fine for overstaying the time granted upon entrance.As a Nigerian you don't need a visa and the fine for an Ecowas citizen for overstaying is lower than for other nationals.It's a certain amount per month.After settling that you can apply for a residence permit which will enable you to open a bank account.

This is a question that has been on my mind...
Is it possible to bypass my Ghana overstay and go back to Nigeria by road to acquire a visa and ticket to another country? Or would it get to be a problem on my passport.

@ikechukwu, if you know what to do, and with a little amount, you can get your passport stamped at the border exit gate at Aflao

Pls how did you resolve this?

Thanks

How do I get a resident's permit in Ghana?

You come in on a visitor's visa and then apply for a resident's permit. You will need a sponsor of some kind to act as a sort of guarantor. A resident's permit only allows you to stay in Ghana, it doesn't allow you to work. For that you need an employer who will apply for a work permit on your behalf.

Pls I. Would like to know if, one has to pay the overstay fee before going back to one's country (ECOWAS) or one can easily pay it at the border (for those going by road)?