Converting a Red Hat PC to CentOS

I need, experts in the house. I had this Windows 8 HP desktop that i converted to a red hat enterprise server. I then noticed that Red hat required paid subscription to do so many things. So i now decides to put d pc on CentOS. The problem is that the system refuses to boot from the CentOS iso cd so i can install CentOS. Any help pls?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Zephyr ICTCloud ArchitectCommented:
Maybe it has something to do with Secure Boot or UEFI, can you disable Secure Boot in the BIOS of your desktop?
You can convert in place:
Or choose Oracle Linux that has +1 in each package number and will reinstall all.
ptoall1000Author Commented:
Been a newbie, i found it much easier to get a fresh Centos installation instead of the conversion. I actually had problem of slow internet speed before, so when i had a faster internet i downloaded Centos iso and installed it afresh. I did not follow ghesit advise, however, i really appreciate the contributions. I m ok now with a fresh installation.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

ptoall1000Author Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for ptoall1000's comment #a40786967

for the following reason:

I found it easier.
ptoall1000Author Commented:
I found it easier to install a fresh centos iso, i felt the conversion was getting more difficult.
Fine for me... Conversion was worth the complexity if you had some data (or as intelectual excersise)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Linux Distributions

From novice to tech pro — start learning today.