system ratings problem

Thread Starter

ect_09

Joined May 6, 2012
180
hi!
i have dell inspiron N5010
core i3
3 gb ram
320 hard disk.

i install new windows ,windows 7 ultimte 64 bit.
after installing drivers ,i retrive my system rating.
it was 4.2,when i again click re-run-assessment then it become 4.1.
before the installation of windows it was 4.4.
what is the reason for decreasing rating???

has it effect on system health..??
 
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