Do you have a lot of fonts installed? As Brynn mentioned, it can take a long time for them to load. You can go into your fonts directory and hide some or most of them, hide the ones that you don't use very often and the loading time should lessen. Specifically, your fonts are located in c:\windows\fonts (at least in win 7 it is). Or you can access it via the control panel. There is a show/hide column. Select the fonts to hide (can hold down CTRL in order to choose multiple fonts), then click on Hide which is on the show/hide tab in the top bar (not sure of the proper name of the task bar). On my laptop it does take some time (under a minute) for the task to complete. I had tons of fonts that I never realized I had, and rarely use, so I hid most of mine. That should help some. (sidenote, if you select some fonts that have already been hid, it thinks you are trying to show them again, and you may see a dropdown box appear, if that happens, just select Hide).
BTW, you had asked this above - and yes, you can go directly to C:\Program Files (86)\Inkscape and click on the exe file. I have found that the first few times you do that it loads fairly fast, then it seems to slow down again, but that could just be me.
dee