Thank you. I was looking for a way to do it without using a third party software but i guess i'll have to go with that.

I have an asus laptop that comes with a D: partition besides the C: drive where all the operating system files, etc are but i don't want this D: partition because i would like to have all my hard drive memory in C: but when i delete D: partition in disk management it becomes unallocated space only thus partition doesn't disappear entirely, it's just waiting to be allocated again and i tried to extend C: drive but the option appears to be greyed out...

So, my dell laptop suddenly shows a warning and im not able to charge my battery nor use it and im only able to use my laptop with AC adapter connected to it but battery just won't work and i've tried many solutions on the internet but doesn't seem to solve my issue and i also thought that my old battery was the problem, so i bought a new one but still have the same problem even though its a new battery. i would appreciate your help! Please!