I have the DraftSighht 64-bit version V1R3 installed in Windows8 Pro, and my two worksheets in paper space are empty (I can not see anything)

(The Windows8 Pro is installed in a notebook HP Pavilion  dv6 with 1366x768 ATI Mobilty Radeon HD 4500)

Another V1R3 is installed on 32-bit Windows 7 Pro, and  I can see perfectly my two worksheets in paper space.

The problem is in my legacy drawing and also in a new model with only a circle or a line.

1) is a problem of the 64-bit version?

2) is a problem of Windows8?

3) you can solve this problem?

thanks