Minidump 032208-01:
BugCheck 100000D1, {fd86a000, 2, 0, ba3e2a98}
Probably caused by : w22n51.sys ( w22n51+73a98 )
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Minidump 041608-01:
BugCheck 100000D1, {83000000, 2, 0, ec6eaa98}
Probably caused by : w22n51.sys ( w22n51+73a98 )
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Minidump 041708-01:
BugCheck 100000D1, {83000000, 2, 0, ecd54a98}
Probably caused by : w22n51.sys ( w22n51+73a98 )
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Minidump 041708-02:
BugCheck 100000D1, {83000000, 2, 0, f8303a98}
Probably caused by : w22n51.sys ( w22n51+73a98 )
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It would appear that w22n51.sys belongs to some form of an Intel NIC. Update the drivers for this device and if you're not using it, disable it.