hi;i hv a dell inspiron 1520 notebk its abt 2 yrs old recently i expirenced tht my computer was slow and getting freezed frequenly thn got my system reinstalled through the call service hv norton, its a renewed version just few days back thinking virus might be there in the computer now the problem is tht whn i am using the system at times it shut down automatically or get freezed

Download, update & run anti malware from malwarebytes.org How do you know when a politician is lying? His mouth is moving.

try removing one ram module ( if you have 2)... if only one...then try out another one... also make sure that the computer is not overheated...check the power supply... ...fans working properly ???... Windows XP user i would appreciate if everybody that has received help from me to say if my suggestions works

See event logs for more information as to why it is shutting down. Playing to the angels Les Paul (1915-2009)