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#21
No, I do not see a reason for Windows 64-Bit is acting weird.
I've tried both Windows 7 32 and 64-Bit Editions on my Acer computer, both works without a hitch.
Have you updated the BIOS? Also, your computer only shows 3GB (out of 4GB) usable right?
You might want to try re-installing on 32-Bit, worst case scenario and cross fingers that works.