HELP! 1TB WD Caviar black HDD loading slow on Great new build!?!?

Hey there, I have a great build here (not overclocked) that can handle any damn game I can find on ultra with zero lag. Here is the problem. I use the WD 1TB HDD for media pics/videos/etc. and every time i go to access these folders/files on this particular HD it takes 5ish seconds for them to open. I realize SSD is a much faster drive however I dont ever remember a 7200 HDD being so slow! help me!

see build below
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-ASUS SABERTOOTH Z77 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

-Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000 BX80637I73770K

-Antec Kuhler H2O 620 Liquid Cooling System 90834875

-EVGA GeForce GTX 670 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready SLI Support Video Card

-Western Digital Caviar Black WD1002FAEX 1TB 7200

-Mushkin Enhanced Chronos MKNSSDCR120GB 2.5" 120GB SATA III MLC Internal Solid State Drive (SSD)

-Kingston HyperX Blu Red Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 Desktop Memory Model KHX16C10B1RK2/16

-Thermaltake Black Widow W0319RU 850W ATX 12V v2.3, EPS 12V v2.91 CrossFire Certified 80 PLUS BRONZE Certified Modular Active PFC Power Supply


-Rosewill THOR V2 Gaming ATX Full Tower Computer Case, support up to E-ATX / XL-ATX

-Microsoft Windows 7 Home Premium SP1 64-bit - OEM