Plz Analise the minidumps and suggest possible solution.
Both errors are 0xD1 and these are caused by either faulty drivers or buggy software. In your case NETIO.sys was cited twice and this is Windows Network I/O Subsystem driver.
Here are some suggestions:
1. Update your drivers for your network card.
2. Search for hotfixes from Microsoft for NETIO.sys because quite a number of people have had issues with this Vista driver.
* Let us know if you have done either or both and let us know the results.