LapTop crashes and reboots without notice

[romtec]

Hi
For last few days my computer restarts several times a day a and blue screen
comes up with the following error message

Driver IRQL not less or equal

tech info:

Stop: 0x000000D1 (0x00000348, 0x00000002, 0x00000000, 0x8AD67F5B)

tcpip.sys - address 8AD67F5B base AT8AD20000,DateStamp 478ad415
--------------------------------------------------------------------------------

Any causes or solutions would be appreciated many thanks

I run a laptop dell inspiron 6400, 1,022 MB Ram, processor dual core 1.60Ghz

windows vista home premium 32 bit

 

[Dustin Harper]

Try downloading and installing new network adapter drivers (either wireless
or wired) for your laptop.

 

[romtec]

went to my computer device manager and unistalled the adsl modem now using a
adsl wireless router-modem

anything else i should do_