Modrá smrt - neustaly problem - restarty PC

A problem has been detect and Windows has been shut down to prevent demage
to your computer.

DRIVER_IRQL_NOT_LESS_OR_EQUAL

If this is the first time you´ve seen thus stop error screen,
restard your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If thus is a new instalation, ask your hardware or software manufacturer
for any windows updates your might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use Safe Mode to remove or disable components, restart,
your computer, press F8 to select Advenced Startup Options, and then
select Safe Mode.

Technical information:

*** STOP: 0x000000D1 (0x019FFFFF,0x00000002,0x00000000,0x8908713A)

*** tcpip.sys - Address 8908713A base at 89002000, Date Stamp 4a5bbf8e

Collecting data for crash dump ...
Initializing disk for crash dump ...
Beginning dump of psysical memory.
Dumping physical memory to disk: 100
Physical memory dump complete.
Contact your system admin or technical support group for further assistance.
______________
A problem has been detect and Windows has been shut down to prevent demage
to your computer.

IRQL_NOT_LESS_OR_EQUAL

If this is the first time you´ve seen thus stop error screen,
restard your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If thus is a new instalation, ask your hardware or software manufacturer
for any windows updates your might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use Safe Mode to remove or disable components, restart,
your computer, press F8 to select Advenced Startup Options, and then
select Safe Mode.

Technical information:

*** STOP: 0x0000000A (0xC55DDCBC,0x00000002,0x00000001,0x82C3F0E9)

Collecting data for crash dump ...
Initializing disk for crash dump ...
Beginning dump of psysical memory.
Dumping physical memory to disk: 100
Physical memory dump complete.
Contact your system admin or technical support group for further assistance.
______________

Tyhle modré obrazovky pořád naskakují, pc jede tak 3 minuty a potom nahodí tenhle
problém. Nevíte nekdo co s tím?. Budu strašne rád za pomoc, na pc pracuju a strasne
ho potřebuju.

OS: Windows 7 32bit, deska: Gigabyte GA-M56S-S3, Ram: DDRII 2gb, CPU: AMD Athlon 4 X2 Dual Core 4400 2.30GHz
HDD: Barracuda 160gb, Zdroj: Forton 400W, Grafika: ATi Raedon HD 2600XT 256Mb DDRII