I just bought Cyberlink Powerdirector 10 and am new to the software,

today when i imported a high quality video and placed the video on the editing strip, the video preview was a black screen, yet i could still hear the audio perfectly. The video was of very high quality and was 1.2GB in size, still in .avi extension though.

Edit: i cant even upload a 50mb clip to this sites forum as an attachment. if you really need to see the video itself to analyze the problem, PM me.

EDIT: Here is the diagnostic, also here is the MediaInfo for one of the avi files, although any movie i play gives the same issue, including the samples included with the software itself:

1. Which operating system do you use, W7, Vista, XP?
Windows 7 Home Premium 64-Bit
2. Which version of PD, See Part A below
Powerdirector 10
3. Which SR number (available in the "About" box of PD and is NOT the CD-Key!)
VDE110926-01
4. What kind of video source material used (codec / container), extension? We often ask for a 5 to 10 second sample , please provide one as an attachment.
Included one of the videos that wont work
5. A detailed step by step description of the problem. See Part D below.
5.1.) Open powerdirector
5.2.) import a video, any video, any format
5.3.) drag and drop it into the edit strip
5.4.) make sure the lines are before the clip i have added, get ready to watch a preview in the right-hand preview field
5.5.) see the first frame of the video and a circle with a plus, indicating its ready to be previewed
5.6.) press play, preview area goes black instantly and only hear audio from the clip. audio is perfect though.
5.7.) try to enable shadow boxes because the video is of high quality
5.8.) repeat 5.3-5.6
5.9.) still doesnt work
5.10.) become sad and here we are.

6. What anti-virus solution is installed on your PC?
BitDefender Antivirus Plus 2012
7. What codec packs installed? See PD's Readme html file
10.00.1012
8. What other video editing programs are installed - just in case there is a software conflict.
None whatsoever
9. What burning software is installed on your PC?
PowerISO
10. What type of blank disk was used, if you have a burning create issue?
No blank discs used
11. What background processes / programs running (especially important for problems with the burning)?
happens whether or not i have programs in the background
12. Provide the dxdiag log file as an attachment, see Part B below
Done.

Complete name : G:\Fraps\Movies\hl2 2012-01-12 22-10-28-34.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 547 MiB
Duration : 11s 33ms
Overall bit rate : 416 Mbps

ID : 0
Format : Fraps
Codec ID : FPS1
Duration : 11s 33ms
Bit rate : 414 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 60.000 fps
Color space : YUV
Bit depth : 8 bits

ID : 1
Format : PCM
Format settings, Endiann : Little
Format settings, Sign : Signed
Codec ID : 1
Duration : 11s 33ms
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 2.02 MiB (0%)
Interleave, duration : 919 ms (55.17 video frames)

My computer is a custom built i7 2600K 3.4Ghz processor, and i have 2 Radeon HD 6870 graphic cards, and 16GB of DDR3 RAM and a 2TB HDD and a Solid state drive. I know the issue isnt my computer. It asked if i would enable shadow files to make previewing easier for lower end computers, but since i have a very very good computer i skipped this. when the preview didnt work in the first place, i then decided to try using the shadow files option and I still got the same result, black screen preview and perfect audio.

Can anybody help me out?