Accidentally going into bootload screen then the phone acted weirdly.
 

This morning when I pressed the power button to power the phone up, I got the bootloader (multi-color banners with a string of "vogue" something. Then I soft reset it, the Sprint ROM was loaded.

Once inside the windows system, it seems normal, but during each start up, I got much slower loading process, the HTC Smart Mobility screen stays on after the flash of SW/HW version, and I lost the windows splash (greenish start up screen), the phone just stays black until the HTC home is loaded.

Can you guys tell me what I did wrong and how I can fix this?

Thanks