Now look at your Windows Device Manager and see if you already have Android Phone listed for HBOOT as shown in one of the last two images (way) below.On the EVO, wait till HBOOT cycles through an SD check (10 sec) then select select HBOOT USB at the bottom of the menu (using the vol keys to navigate and power button to select).

The word HBOOT (blue box with white letters) will change to HBOOT USB PLUG.

Now connect the USB cable between the phone and your PC.

Now simultaneously press the volume DOWN button and the power button, holding till the HBOOT screen appears.

Unzip the file, leaving the folder Android USB Driver somewhere like on your desktop.Once these drivers are installed you may reinstall those and they will continue to work. Uninstall HTC Sync, DoubleTwist, and DropBox from the PC.The idea is to plug your phone into USB while it's in HBOOT mode, forcing Windows to look for Bootloader drivers. The trick is getting these drivers to replace the ones you have from the Android SDK or HTC Sync or ? (or simply installing them if you have no drivers yet). These drivers will replace the ones that came from HTC Sync and be usable for that as well as rooting. You do not have to remove HTC Sync if you have it installed. The following link points to drivers which are universal they will work for all three purposes on the Incredible (and the EVO as well). The drivers that come with HTC Sync can do #1 and #2, but cannot be used for rooting with unrEVOked because they don't support #3. The drivers that come with the Android SDK can't do any of it because none of the interfaces for the Incredible are present in the. BootLoader (while phone is in the HBOOT mode).ADB (USB Debugging and ClockworkMod Recovery).There are three different modes in which the Incredible (or the EVO!) can connect to a Windows system: I thought I'd maybe add to that or create an alternative article. Monitoring the traffic on the unrEVOked IRC channel, it's clear that there is a ton of confusion about the USB drivers needed, despite the excellent article on the unrEVOked site.

Windows 7 htc fastboot driver