Wlan0 device and mouse suddently no more available

[11111]

Hello everybody,
I have some problems with Backtrack since I tried to restore the grub installation, which was substituted by that of BT, which excluded all other linux OS installed.
So I followed the instruction to restore Grub2 and it works! I have now all my OS back inclusive BT4.
But... neither touchpad nor usb-mouse functioned anymore, and starting /etc/init.d/networking the wlan0 device, which was recognized till that moment, outputted

SIOCSIFADDR: No such device
wlan0: ERROR while getting interface flags : No such device
wlan0: ERROR while getting interface flags : No such device
Bin d socket to interface: No such device
Failed to bring up wlan0.
done.

I put then the live cd in the laptop (Acer aspire 5630) and I see everything works well, so I decided to install BT4 new. I reboot and the issues are still here: no mouse and no wlan.

Searching in internet I found out how to enable SHMConfig for the touchpad, unfortunately the touchpad is still dead, but the usb-mouse functions again...

what can I do to get the touchpad and, more important, the wlan0 device working again?

Greetings

EDIT:
when I try to run synclient, the answer is always:" X server supports X Input 1.4. I need 1.5.", I have no idea what this could mean.
What now concern wlan, this is what I get

 
# /etc/init.d/networking start
Configuring network interfaces...Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:16:d4:ca:80:97
Sending on   LPF/eth0/00:16:d4:ca:80:97
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
if-up.d/mountnfs[eth0]: waiting for interface eth1 before doing NFS mounts
if-up.d/mountnfs[eth0]: waiting for interface eth2 before doing NFS mounts
if-up.d/mountnfs[eth0]: waiting for interface ath0 before doing NFS mounts
if-up.d/mountnfs[eth0]: waiting for interface wlan0 before doing NFS mounts
eth1: ERROR while getting interface flags: No such device
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
eth1: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up eth1.
eth2: ERROR while getting interface flags: No such device
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

SIOCSIFADDR: No such device
eth2: ERROR while getting interface flags: No such device
eth2: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up eth2.
ath0: ERROR while getting interface flags: No such device
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

SIOCSIFADDR: No such device
ath0: ERROR while getting interface flags: No such device
ath0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up ath0.
Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/wlan0/00:19:d2:3b:67:04
Sending on   LPF/wlan0/00:19:d2:3b:67:04
Sending on   Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 19
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
if-up.d/mountnfs[wlan0]: waiting for interface eth1 before doing NFS mounts
if-up.d/mountnfs[wlan0]: waiting for interface eth2 before doing NFS mounts
if-up.d/mountnfs[wlan0]: waiting for interface ath0 before doing NFS mounts
done.

Now also wired lan doesn't work anymore -.-

[hypervista]

One thing to try, check /etc/network/interfaces and make sure it looks something like:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto wlan0
iface wlan0 inet dhcp

auto wlan1
iface wlan1 inet dhcp

Make sure your /etc/resolve.conf file contains:

nameserver <gateway, ie 192.168.1.1>

Then type:

ifconfig wlan0 up

Hopefully that helps get you network interfaces up and going.