If you search form sony site for PCG-3H1M you will get 'product not found', this is because the right model for PCG-3H1M is different such as Sony Vaio VGN-FW Series VGN-FW4ZTJ/H, so look carefully on the back stickers normally it state the right model.
example:
Sony Vaio PCG-3H1M / VGN-FW41J
To make it easier for you and for me, write all the information provided on the stickers including ref num etc.
SATA DRIVER
Intel Sata driver registry patch - 080619a
Also available through VAIO Update32 bits 371.24 Kb 27/10/2009
Intel Sata driver registry patch - 080619a
Also available through VAIO Update64 bits 371.24 Kb 27/10/2009
_______________________
7UPG_Wireless LAN Driver (Intel)_32 32 bits
2.14 Mb 22/10/2009
7UPG_Wireless LAN Driver (Intel)_64 64 bits
2.72 Mb 22/10/2009
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GRAPHIC
There are 2 applicable graphic which is inel and ATI.
7UPG_Graphics Driver (ATI)_32 32 bits
106.37 Mb 22/10/2009
7UPG_Graphics Driver (ATI)_64 64 bits
110.5 Mb 22/10/2009
7UPG_Graphics Driver (Intel)_type1_32 32 bits
25.29 Mb 22/10/2009
7UPG_Graphics Driver (Intel)_type1_64
64 bits 26.3 Mb 22/10/2009
ETHERNET
Download and read the installation instruction for Ethernet at the end of the post.
Select 64 and 32 bit base on your specs.
7UPG_Ethernet Driver (Marvell)_32 32 bits
357.89 Kb 22/10/2009
7UPG_Ethernet Driver (Marvell)_64 64 bits
416.86 Kb 22/10/2009
BLUETOOTH
7UPG_Alps Bluetooth driver 32 / 64 bits
57.74 Mb 22/10/2009
AUDIO DRIVER
(Install both audio and HDMI Driver)
Audio driver - 6.0.1.5886
Also available through VAIO Update32 / 64 bits 139.66 Mb 27/10/2009
7UPG_Audio Driver (Realtek)32 / 64 bits
98.01 Mb 22/10/2009
7UPG_Audio Driver (Realtek) HDMI 32 / 64 bits
8.8 Mb 22/10/2009
INSTALLATION NOTE:
7UPG_Ethernet Driver (Marvell)_32 32 bits and 64 bits
1. Unzip the driver folder.
2. Open device manager by click start and type DEVMGMT.MSC and press enter.
3. A device manager will open, look for Ethernet/Network controller marked with yellow.
4. Right click and select update driver.
5. Select Browse My Computer For driver software.
6. Click browse and point to the driver folder we extracted earlier.
7. Next and continue with on screen installation.