NET WORK PROBLEM

​hi every body​

​i have a problem with my network adaptors. when i connect to internet via Lan card(broadcom netlink TM) or WiFi 5100 after few minutes my lap top totlly freezes. it hangs and locks up/ no key works. alt+ctrl+delete dont work. i must push shut down bottom a few seconds to turn the laptop off. to solve this i change my OS /all os i try it such as win7 32bit/ win7 64bit/ win vista 32bit & .... but in all os i have this problem again. also i update latest network adoptor drivers , But i have this problem./ i dont know what should i do to solve this problem/ I think it is hardware issue / i forgot to say that when i work in "safe mode with networking" the lap top does not freeze (hang+ lock up) / if any body here help me to solve this problem i promise to tell him thanks him thanks ​

​LAPTOP dell studio 1555​

​ intel T9600 2.8 Ghz​

​ ram 4gig​

​ net work adaptors : intel wifi link 5100​

​ broadcom netlink (TM) Gigabit Ethernet​

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​my email : <​​ADMIN NOTE​​:Email Id removed per privacy policy>​