Hardrive re-use with keeping windows?

[boostedturbo]

So I bought everything I needed to build a new pc, except the hard-drive because I was going to re-use it...
Now it just came to my understanding I would have to buy a new copy of windows... Unfortunately I have spent my whole budget...
Is there a way to wipe all my drivers, keep windows, and boot my new pc?
I have a new Mobo, Cpu, Memory, Gpu, and power supply...

Edit: my hardrives comp is an Asus Essentio

 

[USAFRet]

So I bought everything I needed to build a new pc, except the hard-drive because I was going to re-use it...
Now it just came to my understanding I would have to buy a new copy of windows... Unfortunately I have spent my whole budget...
Is there a way to wipe all my drivers, keep windows, and boot my new pc?
I have a new Mobo, Cpu, Memory, Gpu, and power supply...

Edit: my hardrives comp is an Asus Essentio

What OS is this?

2 considerations, OPeration and Licensing.

Operation - Will it or will it not boot up with the new hardware? Unknown. It might, or it might fail completely.
If it does not, it will require a complete reinstall.

Licensing - Depending on what OS and license, it may require a whole new OS.


So...what do you have?

 

[grmnlxndr]

If you had a prebuilt ASUS computer, most probably it would be a OEM Windows licence, and you would need a new Windows Licence, because of the new motherboard.
You could consider using linux which is free.
Regards

 

[boostedturbo]

thank you both, it is windows 8.1, it came preinstalled on my comp and I have no clue how to check my licensing... If there is a way, let me know and I will find out

If worst case scenario happens: is linux easy to use and can I game on it like I would windows?

 

[USAFRet]

thank you both, it is windows 8.1, it came preinstalled on my comp and I have no clue how to check my licensing... If there is a way, let me know and I will find out

If worst case scenario happens: is linux easy to use and can I game on it like I would windows?

If the OS came with the PC, and it is 8.1, then it is an OEM license.
As such, it is tied to that original system/motherboard.

You will need to purchase a new license for your new system.

 

[boostedturbo]

Okay, thank you for the response...
I really appreciate your help on this matter