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.

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.
My Computer
- OS
- Windows 7 Professional
- CPU
- Intel Core i7-2670QM
- Memory
- Samsung 8GB
- Graphics Card(s)
- NVIDIA GT 555M
- Hard Drives
- Intel 525 120GB | HGST Travelstar 1TB
- Mouse
- CM Storm Xornet | Microsoft Sculpt Comfort
- Internet Speed
- 25 Mbps | 600 Kbps
- Other Info
- Centrino 6205 | Seagate Backup Plus 1TB
