Hi DJC1985
It appears to be a possible hard drive problem since you are unable to watch recordings and also unable to pause and rewind live TV which is the same as recording.
How much free space is showing on your hard drive?
Recordings > Recorded > View all > It will show a percentage in the top left hand corner of this screen. You might need to delete some recordings.
One previous poster with this issue solved it because, "The white converter lead mush be a bit dodgy. Upon wiggling the cable the 360 box picture broke up. I swapped the lead for a standard f type to standard ariel adapter and that solved that problem. "
When you performed the factory resets which option did you choose? Keep Recordings or Format Disk. If you haven't already then I would try the Format Disk option.
If the above doesn't solve the issues then you can either call Virgin on 150 from a Virgin or 0345 454 1111 from any other phone to report a fault (option 2) or wait here for one of the forum team to pick this up which might be 2 to 3 day's.