PC Fans doesn't work

[Iroshan]

Plz help! I've recently built a pc but i do not have much knowledge about computer hardware side. Yesterday i have installed a second hard drive to my pc. After that my fans in front of the case stopped working. My MB is asus tuf b460M plus wifi. And i have a raidmax x627 case. It has 4 fans. 3 in front and one in back. Back fan works fine and the cpu air cooler works too. Not the front fans. Plz help me I'm freaking out here.

[Tech87]

Sounds like you accidentally knocked off the fan plug from the header.

Check the wiring from the fan to the motherboard, and make sure the connection is secure.

[Iroshan]

Ok I'll try that and see.

Just to be sure. If the back fan and cpu cooler works. That means my motherboard is okay right? 

[Iroshan]

You meant this one right? There's a hub thingy where all the cables of three fans connects together. But there's no power input for the fans from the power supply. I guess it's disconnected. 

[Iroshan]

Should i connect these two together.

 

Oh I'm a total brick when it comes to computer hardware.

[Tech87]

Yes, that molex plug should provide power to the fans, just keep in mind that any fans not plugged directly into the motherboard won't have fan monitoring and I believe they will run at full speed off molex.

 

Ideally you want to plug the fans into the fan headers on your motherboard.