Link to host specs:
https://escatter11.fullerton.edu/nfs/show_host_detail.php?hostid=6864405
It's nothing too out of the ordinary. I have many other similarly spec'ed PCs that do fine in Windows and in Linux.
Not sure what makes this one "special."
Error log:

<core_client_version>7.14.2</core_client_version>
<![CDATA[
<message>
Incorrect function.
 (0x1) - exit code 1 (0x1)</message>
<stderr_txt>
boinc initialized
work files resolved, now working
-> projects/escatter11.fullerton.edu_nfs/lasieve5f_1.11_windows_x86_64.exe
-> -r
-> -f
-> 1382444000
-> -c
-> 2000
-> -R
-> -o
-> ../../projects/escatter11.fullerton.edu_nfs/S11m307_1382444_0_r2128933041_0
-> ../../projects/escatter11.fullerton.edu_nfs/S11m307.poly
xrealloc: Not enough space
18:36:10 (166640): called boinc_finish

</stderr_txt>
]]>

Help?

Have you tried another project? If so, do you get the same thing? Maybe your BOINC is out of date for 64 bit windows (worth a try?) or you don't have read/write permission to the folder needed?

How much of the storage have you let BOINC use? (just guessing based on "xrealloc: Not enough space")