unable to save game - error sign comes up

What error are you getting ? Error 12 ?

See here: http://answers.ea.com/t5/The-Sims-3/FAQ-Save-Errors-Error-12-13-15-16/td-p/652/jump-to/first-unread-message

Yes I get error 12

I have tried all the solutions posted but can not play a game because it will not save ?

Could you post your Computer's DxDiag?

To gather a DxDiag on your computer, please follow the steps below:

If you have Microsoft Windows XP:
1. Click the Start button on the Windows Taskbar.
2. Select Run.
3. Type dxdiag in the available text field.
4. Click OK.
5. Click Save All Information.

If you have Windows Vista/Win 7 and do not have a Run selection:

1. Click On Start
2 Type dxdiag into Search Box
3. Click Save All Information.

Either use two posts to post all or only post the part up to [sound device].

Please let me know if you have a switchable graphic card. That usually does not show in the DxDiag.

System Information
------------------
Time of this report: 10/10/2012, 21:59:43
Machine name: VIVIEN-PC
Operating System: Windows 7 Home Premium 32-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120830-0333)
Language: English (Regional Setting: English)
System Manufacturer: MEDIONPC
System Model: MS-7658
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i3 CPU 540 @ 3.07GHz (4 CPUs), ~3.1GHz
Memory: 4096MB RAM
Available OS Memory: 3064MB RAM
Page File: 1705MB used, 4418MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: NVIDIA GeForce 310
Manufacturer: NVIDIA
Chip type: GeForce 310
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0A66&SUBSYS_10021019&REV_A2
Display Memory: 1750 MB
Dedicated Memory: 474 MB
Shared Memory: 1275 MB
Current Mode: 1600 x 900 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: 2036
Monitor Id: AOC2036
Native Mode: 1600 x 900(p) (60.000Hz)
Output Type: HD15
Driver Name: nvd3dum.dll,nvwgf2um.dll,nvwgf2um.dll
Driver File Version: 8.17.0011.9778 (English)
Driver Version: 8.17.11.9778
DDI Version: 10.1
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 5/5/2010 07:14:38, 9399912 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-4926-11CF-9B55-09301CC2C535}
Vendor ID: 0x10DE
Device ID: 0x0A66
SubSys ID: 0x10021019
Revision ID: 0x00A2
Driver Strong Name: oem5.inf:NVIDIA_SetA_Devices.NTx86.6.1:Section013:8.17.11.9778😛ci\ven_10de&dev_0a66&subsys_10021019

Audio Renderers:
Speakers (Realtek High Definiti,0x00200000,1,0,quartz.dll,6.06.7601.17713
Default DirectSound Device,0x00800000,1,0,quartz.dll,6.06.7601.17713
Default WaveOut Device,0x00200000,1,0,quartz.dll,6.06.7601.17713
DirectSound: Realtek HDMI Output (Realtek High Definition Audio),0x00200000,1,0,quartz.dll,6.06.7601.17713
DirectSound: Speakers (Realtek High Definition Audio),0x00200000,1,0,quartz.dll,6.06.7601.17713
Realtek HDMI Output (Realtek Hi,0x00200000,1,0,quartz.dll,6.06.7601.17713

---------------
EVR Power Information
---------------
Current Setting: {5C67A112-A4C9-483F-B4A7-1D473BECAFDC} (Quality)
Quality Flags: 2576
Enabled:
Force throttling
Allow half deinterlace
Allow scaling
Decode Power Usage: 100
Balanced Flags: 1424
Enabled:
Force throttling
Allow batching
Force half deinterlace
Force scaling
Decode Power Usage: 50
PowerFlags: 1424
Enabled:
Force throttling
Allow batching
Force half deinterlace
Force scaling
Decode Power Usage: 0

You have a 32 bit Operating system with that, the game can't use more then 2 GB of RAM.

You might want to look into a 64 bit one.

Thanks for your help looking for 64bit tomorrow hope it will work