Hard disk partitions

Good morning everyone.
Win 7 is installed on my computer and I messed up (I think it was a mess)
In managing the disk, by mistake or inability to do so, I unintentionally created 2 partitions (C) and (D), the first is a primary partition made up of 232GB in NTFS, the second (D) created by mistake of 99MB in NTFS.
Wanting to reunite them, I typed (partition management and the appropriate window opened, on the 99mb partition I gave the volume delete command. At a certain moment the computer turned off and when I turned it on I gave the partition management command again.
now in the basic disk 0 of 232 GB I got: volume D 99mb in NTFS intact
(primary partition)
Volume C 232 GB in NTFS intact
(System, Startup, Paging File, Active, Crash Details)
Currently I can't rejoin the 2 partitions what should I do